David had prepared carefully for the chemistry exam, as he wanted to be sure of passing it at the first _____.
Because of the recent bad weather, the work is several weeks behind_______.
--- What should I wear for my former boyfriend’s birthday party? --- ________. We’re already late!
There are two buildings in our new school, ________ stands nearly a hundred feet high.
Kimi is ________ that everyone wants to play with him.
--- Why do you look so upset? --- There are so many troublesome problems _________.