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All ___ (be) on time for the meeting.Now,let's begin.All the

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All ___ (be) on time for the meeting.Now,let's begin.All the men___(be) on strike for a week.
We_____(be)all excited when he arrived.
All of her friends_____(be)now volunteers in Africa.
All _are__ (be) on time for the meeting.Now,let's begin.
All the men_have been__(be) on strike for a week.
We__were___(be)all excited when he arrived.
All of her friends__are___(be)now volunteers in Africa.
再问: 为什麼
再答: All _are__ (be) on time for the meeting.Now,let's begin. 从All 与Now,let's begin可以判断这里谓语动词要用复数形式,且时态要用一般时态 All the men_have been__(be) on strike for a week. 从 for a week可以判断出这里要用现在完成时态 We__were___(be)all excited when he arrived. 从 when he arrived可以判断这里要用过去时态 All of her friends__are___(be)now volunteers in Africa. 从All of her friends与now可以判断这里谓语动词要用复数形式,且时态要用一般时态