——Helen, do you know if Martin _______ to my party next week?

——I think he will come if he ______ free.

A. will come; will be                                      B. will come; is

C. come; is                                                      D. comes; will be

– I don’t know if Mr. Li ____ to the party this evening.

-- I think he will come if he ____ free.

A. will come; is   B. will come; will be   C. comes; is D. comes; will be

I don’t know if he __________ tomorrow . If he _______ here , I will call you .

A. will come , comes      B. will come , will come

C. comes , will come      D. comes ,comes

Frank _____ to see his grandma if he _____ free tomorrow.

A. will come ; will be  B. comes ; is    C. will come ; is  D. is; come

Alice ________ to see his aunt if she _______free tomorrow.

A. will come; will be   B. come ; is  C. will come ;is   D. comes ;will be