情态动词should表示建议 — 英语词汇题
题目
用括号内所给词的正确形式补全句子，每空一词。1. We __________ (should) waste paper, because trees are important to us. 2. To save trees, you __________ (should) use both sides of every piece of paper when you write. 3. __________ (should) we plant more trees in our city? — Yes, we should.