She seems to know nothing about the accident.She ____ been h

She seems to know nothing about the accident.She ____ been here.(can't have,mustn't have).二选一
高速蜗牛_ee 1年前 已收到2个回答 举报

孙小鱼 幼苗

共回答了23个问题采纳率:87% 举报

选 can't have
一般肯定(一定)用 must
否定时(不可能)用can't

1年前

1

做梦人 幼苗

共回答了1个问题 举报

用can't have。mustn't have表示“不准,不许”

1年前

2
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