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I get on the bus when I heard someone calling me from behind.A.was toB.was going

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I get on the bus when I heard someone calling me from behind.A.was toB.was going

I _________ get on the bus when I heard someone calling me from behind.

A.was to

B.was going to

C.would

D.was about to

试题答案

D

解析:

be about to意为“正要”。全句的含义为“我刚要上车,这时我听到有人在背后叫我”。该句特点为:主句是背景,而when从句却是要表达的主要内容,这样主句时态往往是进行时,可用be about to来表示。而其他三项只有表示将来时。