核心语法项目整合 — 英语词汇题
题目
阅读留言并完成任务。每空填一个词。Hi, Ben! There 1. ___ a school clean-up tomorrow. We 2. ___ going to clean the playground. Yesterday, we 3. ___ some old paper near the gate. You 4. ___ wear gloves to keep your hands clean.（用 be、find、should 的适当形式）