B to help
ask sb.to do 的否定形式是:ask sb.not to,所以排除:A,C ,D
The teacher asked us___each other.A to not help B to help C help D not help
The teacher asked us___each other.A to not help B to help C help D not help
英语人气:402 ℃时间:2019-10-19 04:07:15
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