作业帮Mr.Hopkins didn't know___.A.whom they were waiting B.whom they were waiting for并说明
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Mr.Hopkins didn't know___.A.whom they were waiting B.whom they were waiting for并说明
Mr.Hopkins didn't know___.A.whom they were waiting B.whom they were waiting for并说明
Mr.Hopkins didn't know___.A.whom they were waiting B.whom they were waiting for并说明
Mr.Hopkins didn't know （B.whom they were waiting for）.
霍普金斯先生不知道他们在等谁.
wait（等待）是不及物动词,等待某人要说成“wait for sb”,要有介词的帮助才能接宾语.所以A项是不完整的,要选择B.
B
Wait是不及物动词。所以等某人不能说wait sb。只能说wait for sb
选B
主句用一般过去时，根据句意，宾语从句中的时态要保持一致，同样用一般过去时。
B
wait是不及物动词，接 whom 必须用wait for 短语形式。
B
Wait是不及物动词。你可以把句子掉头看一下。 They were waiting for whom. 宾语从句，疑问词提前，whom提前，就成了现在的句式。 （注意：Wait是不及物动词，所以等某人不能说wait sb，只能说wait for sb）。
综合上述，只能选B。
希望可以帮到你。求采纳。 ...
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B
Wait是不及物动词。你可以把句子掉头看一下。 They were waiting for whom. 宾语从句，疑问词提前，whom提前，就成了现在的句式。 （注意：Wait是不及物动词，所以等某人不能说wait sb，只能说wait for sb）。
综合上述，只能选B。
希望可以帮到你。求采纳。
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