Do you know if ____ back next week? If he _____back, please let me know.

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

—Betty, do you know if Tony ______ the photo competition?

—He will, if he ______ his project on Australia.

A.enters; finishes                                                     B.enters; will finish

C.will enter; finishes                                      D.will enter; will finish

---- Do you know if we will go for a picnic this Saturday?

---- I think we will if we   any classes.

A．won’t have                           B．didn’t have

C．don’t have                           D．aren’t having

— Do you know if Daniel      fishing tomorrow afternoon?
— I’m not sure. But if he        go, I won’t go, either.