What do you think of David ? — There are some things that are not easy to , and his coldness is one .

I will stay at home and read some books if it_________ tomorrow.

It`s already 10 o`clock. I wonder how it thatshe was two hours late on such a short trip.

sor Zhang handed out the textbooks toall the students,except who had alreadytaken them

_________ —— He is cleaning his room.