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根据句意，用 had better 的正确形式完成句子（每空一词）。1. It's going to rain. You had better ________ (take) an umbrella with you. 2. You had better ________ ________ (not talk) loudly in the library. 3. We had better ________ (go) to bed early tonight.
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根据句意及首字母提示填空：Shopping online is convenient, but we can't see the real products. So we should know both the good points and bad points of the Internet. In other words, the Internet has both a________ and d________.
根据首字母及中文释义补全本单元形容词：1. The view of Zhangye's colorful mountains is truly a________（令人惊叹的）. 2. The speed of the high-speed train is u________（难以置信的）—it runs over 300 km per hour. 3. The n________（自然的）beauty of Jiuzhaigou attracts visitors from all over the world.
A new science museum welcomed 3,200,000 visitors last year. It welcomed 3.2 ______ visitors.（用一个英文单词补全）
完成句子。根据中文提示写出所缺词语：In the past, there ______ (过去常常) be a small park near my home. Now it is a large library.
用 since 或 for 填空，每空一词：1. We have known each other ______ we were in primary school. 2. My grandparents have lived in the new flat ______ about ten years. 3. He has kept the stamp ______ 2015. 4. The factory has produced bikes ______ three months.
从词库中选词完成短文，每词限用一次：website, online, search, click, download。Mia wants to find a new recipe. First, she goes ______ and ______ for it. Then she opens a ______ and ______ the recipe file to her tablet. She can read it later without the Internet.
在“Amazing China”主题英语手抄报中，你需要完成以下数词表达任务：(1) 珠穆朗玛峰的最新高度为8,848.86米，用英语读出这个数（含小数点后的读法）；(2) “三亿四千零五万”这个数用阿拉伯数字加千位分隔符写出来；(3) 填空：The Yangtze River is about 6,300 kilometers long. 6,300 应读作 ____________。请依次写出三题的答案。
在风暴避险点，给安全提示补全句子，每空填 and 或 or：Stay inside the shelter, ___ you will be safe. Keep away from the windows, ___ you may be hurt by broken glass. Follow the staff’s instructions, ___ you may not know where to go.
Read the safety notice carefully, ___ you will know what to do.（用 and 或 or 填空）
根据句意，用 because 或 because of 填空。A bear left its cave ______ it could not find food there. The animal shelter was closed ______ the heavy snow.
根据中文提示或首字母提示补全句子（每空一词）。School Green has f______ students than School Red; Green has 860 students, but Red has 920, so School Red has m______ (更多的) students than School Green.
根据英文含义补全单词：China has a population of 1.4 b________.（14亿）
根据句意和中文提示，用 million/billion 的正确形式补全句子： 1. The Yellow River is about 5,464 kilometres long, and about two ______ (百万) people live near it. 2. China has a population of over 1.4 ______ (十亿). 3. ______ (百万) of tourists visit the Great Wall every year.
根据两人的现状，用 been 或 gone 填空：Nina is still at the museum. She has ___ there. Jack visited the museum this morning and is back home now. He has ___ there, too.
用 been 或 gone 补全句子。1. My uncle isn't here. He has g____ to Beijing on business. 2. I have b____ to the new museum twice. It is really wonderful. 3. —Where is Lucy? —She has g____ to the library. 4. Have you ever b____ to Hong Kong?
根据中文提示完成句子，每空一词（含缩写）：1. You will stay safe ______ （如果）you follow the safety rules in the lab. 2. We can't go hiking ______ （如果）the weather gets worse tomorrow. 3. ______ （如果）you hear the fire alarm, leave the building quickly and quietly.
根据句意及汉语提示，每空填一个单词。社区安全日当天，入口处贴着规定：Visitors ______（必须）keep the door clear. Before the activity starts, every visitor ______（必须）read the safety notice and ______（必须）stay with the group.
根据句意及所给汉语提示填写单词，使句子完整正确。Students must f________（遵循）the school safety rules to keep themselves safe.
根据情境补全描述天气的形容词：Rain is falling from the sky, so it is a r____ day.