--- 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.

My sister met him in the hospital yesterday afternoon, so he _________ your lecture.

_Could I go to the movie this Sunday, Dad?Yes, you_____. But you ______ come back before nine.

It’s difficult-------- me to learn English well.

 --My computer ____start, no matter how hard I try.--It might have crashed.