You know that's right, ______.
A. is it
B. isn't it
C. do you
D. don't you
第1题：
A.do
B.did
C.don’t
D.didn’t
第2题：
A. mustn’ t
B. can’ t
C. don’ t
D. needn’ t
第3题：
A.mustn’t
B.needn’t
C.don’t need
D.won’t
第4题：
You_____tell anyone -it's a secret!
A. have to
B. don't have to
C. must
D. mustn't
第5题：
Must I stay at the office this afternoon? ---No, you ______.
A、don’t
B、needn’t
C、don’t need
D、can’t
第6题：
A、do
B、didn't
C、did
D、don't
第7题：
-Mayweleavetheclassroomnow?
-No,you______.You______toleaveuntilthebellrings.
A.mustn’t,areallowed
B.don’thaveto,aresupposed
C.needn’t,aren’tallowed
D.can’t,aren’tsupposed
第8题：
A、do
B、don't
C、will
D、won't
第9题：
You_________tell anyone一it's a secret!
A. have to
B. don't have to
C. must
D. mustn't
第10题：
I put my coat here? Sorry, you（）
AMay; mustn't
BDo; don't
Ccan; needn't
DMay; can't