I was really anxious about you. You____ home without a word.

You look quite tired. You’d better _____a good rest.

It ________ be the postman at the door.It's only six o'clock.( 2011·江西)

I ________ be a little bit slow, but at least I don’t make stupid mistakes. 

 --- Do we have to hand in our research reports this afternoon, Professor Smith?--- Yes, you _______ . I will be waiting to check them all the afternoon.