—How about joining us in the summer camp? —I wish I could, ___________ I have to practice for the piano test. 
#56543
A
because
B
so
C
but
D
although
推荐题目
 I don’t like running, _____I like swimming. 
#56237
A
and    
B
but   
C
with   
D
so
 _______hard work it is! And__________should I do to complete it well? 
#55452
A
What a, how
B
What, what
C
How, what
D
What, how
---___________ ? ---It’s cloudy.
#57981
A
What’s the weathe
B
what was the weather like
C
How’s the weather like
D
How is the weather
Remember to wash your hands __________ you have meals.
#56692
A
before
B
until
C
though
D
unless