一What are you going to do this weekend?一Well,we’ll clean up the city parks _______ it rains .
#38406
A
if
B
until
C
while
D
unless
推荐题目
—Is this football ______?  —No, it’s ______. 
#40612
A
yours; Kate
B
your; Kate
C
yours; Kate’s
D
your; Kate’s
-When did you go to the movie?.-__________.
#42181
A
Next Monday
B
Three days ago
C
Three times a week
D
For three days