I ________ in the kitchen when you phoned

1 I ______ 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 must be( 为啥不可以?)

2 Would 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!!! )
B will have handed in
C hand in
D will hand in

正确答案 A A

3. I’d rather you ________ in their arguments I ________ the flat in the centre of the town. I live in China.________ is a big country. I ________ in the kitchen when you phoned I’m going to take an early bus ________ I can get there in time. 1I'm an ______girl.I live in ________.(America) He ________ in traveling. A: I have got a pain in my chest. B: You ________ see the doctor. I'm afraid in our class ________ able to solve it. I learned a lot when ________(work ) in the countryside. 答案是working!为什么丫？