Do you know if _______ back next week ? If he ________ back , please let me know .

A．he will come , comes                     B．will he come , came

C．he comes , will come                     D．he will come , will come

I don’t know if Mike _______to my school tomorrow.

If he____, I will be very happy.

A. comes; comes ????????????? ????????????? ????????????? ????????????? ????????????? B. came; will come

C. will come; comes ????????????? ????????????? ????????????? ????????????? D. will come; came

I don’t know if he ________ back tomorrow. If he ______ back, I’ll let you know.

A. comes; will come???????????? B. will come; came????? C. will come; comes

He ________ here for 15 years. He ________ here in 1987.

[　　]

He ________ here for 15 years. He ________ here in 1987.

[　　]