1. I can play the guitar well.(改为一般疑问句)
    _________ _________play the guitar well?
2. Jenny wants to join the chess club.(对画线部分提问)
    _________ __________does Jenny__________ to  join?
3. My sister often helps me learn math.(改为同义句)
    My sister often helps me___________ my math.
4. Can Victor and Jack play chess?(作否定回答)
    No, __________ __________.
5. Jenny can sing and dance. (对画线部分提问)
    _________can Jenny_________?

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A. to join
B. join
C. joining
D. to join in

A. to join in
B. join in
C. join
D. joining