How many states _______ the United States? Fifty. 
#57159
A
turn up
B
make up
C
end up
D
give up
推荐题目
I _____ this book for two weeks. I have to return it now. 
#54965
A
borrowed
B
have borrowed
C
kept
D
have kept
I’ve found your watch. You ____ it on my desk yesterday.
#54106
A
left
B
have left
C
forgot
D
have forgotten