英语六年级填空题标准

should表义务的用法 — 英语填空题

辽宁师大版·英语 Unit 4 Let's go green AI 三重审校通过

题目

用 should 或 shouldn't 填空（每空一词）：To go green, we ___ throw rubbish into the river; instead, we ___ put it into the bin. It's good for our environment.