1.I ____my homework and forgot the time .A.did B.was doing C.do D.am doing

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1.I ____my homework and forgot the time .A.did B.was doing C.do D.am doing

.I ____my homework and forgot the time 选择B 我刚才一直忙于写作业竟然忘了时间了.因为后面forgot 是过去式,所以要保持时态一致前面应用 i was doing

B.was doing
过去进行时,因为后面是过去时态的。