Before the problem can be solved,it must be obvious ________ the problem itself is.(2011·湖南,31)
Why didn’t Jim come to school this morning? ---Because there was _______ with his legs.
There is some doubt_______ he can win the first prize.
It is _____ that the Chinese ping-pong team will win the prize.
Could you tell me__________________?
In my opinion, the film is ______worth _______a second time.