1. 根据句意,用方框中所给单词的适当形式填空,每个单词仅能用一次。

possible, group, environment, that, communicate

(1) Our maths teacher usually lets us discuss the problems in .
(2) It's our duty to protect the .
(3) It's for us to finish such a difficult task in such a short time.
(4) WeChat makes it easier for us to with each other.
(5) I don't like the red hat because I think is for girls.
【考点】
选词填空; 规则变化的可数名词复数; 不定代词; 形容词原级;
【答案】

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选词填空(多句) 普通