Spelling Bee is a contest ________ competitors, usually children, are asked to spell as many words as possible.
#67152
A
which
B
where
C
what
D
when
推荐题目
The theory he sticks to ______ to be of no use in our studies. 
#72228
A
proves
B
prove
C
proving
D
be proved
All the students went to see ______ with her.
#71958
A
what the matter was
B
what was the matter
C
what wrong was  
D
what was the wrong