when the teacher came in ,all of us _____.A.stopped talking B.stop talkingwhen the teacher came in ,all of us _____.A.stopped talkingB.stop talking

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whentheteachercamein,allofus_____.A.stoppedtalkingB.stoptalkingwhentheteachercamein,allofus_____.A.s

when the teacher came in ,all of us _____.A.stopped talking B.stop talkingwhen the teacher came in ,all of us _____.A.stopped talkingB.stop talking
when the teacher came in ,all of us _____.A.stopped talking B.stop talking
when the teacher came in ,all of us _____.
A.stopped talking
B.stop talking

when the teacher came in ,all of us _____.A.stopped talking B.stop talkingwhen the teacher came in ,all of us _____.A.stopped talkingB.stop talking
A
过去分词被动形式
when the teacher came in中已经有 came in这个动词了 一句英语句子中只能有一个动词
所以用过去分词!并且表被动 我们所有的人肯定是被停止 被老师停止 不要再说话了

stopped talking

时态一致,前面用了came (come 的过去式),后面应该用stopped
选A