1、It's highly necessary that Jack____to confirm his flight r

1、It's highly necessary that Jack____to confirm his flight reservation before Friday.
A come B comes C must come D came
为什么选A啊?
2、The directions stressed that it was vital that test-takers___there on time.
A were B must be C be D would be
这个为什么选C?
80149086 1年前 已收到2个回答 举报

hal_10 幼苗

共回答了21个问题采纳率:90.5% 举报

1,虚拟语气省略SHOULD
2,同理

1年前

3

SKY-深寒 幼苗

共回答了83个问题 举报

都是虚拟语气
should+动词原形,should省略了

1年前

0
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