I ________ in the kitchen when you phoned

问题描述:

I ________ in the kitchen when you phoned
1I ______ in the kitchen when you phoned
A must have been ( "must have done" 表推测过去必然发生的事情,语气较强,具有肯定的意思)
B mustbe(为啥不可以?)
2Would you sooner I__ _______ my paper tomorrow morning?
A handed in(这个表示上交,这我知道,可整个句子看下来咋这么别扭呢!我分析了一下语法结构,好像是错误的!)
Bwill have handed in
Chand in
Dwillhandin
正确答案 A A

1 看到后面的phoned,表示是过去式,则前面绝对不能用一般时的must be,且must have been是对过去的事情的推测,所以.
2 第二题那里是有个“I”