If it ______ tomorrow, we'll have a trip to Xiang Mountain.

I don't know if he ______ you. If he ______ much time at that moment, he will.

I will tell him as soon as he ______ back.

---Is your uncle still smoking?
---Yes. It’s nearly five years _______ he smoked.

---I wonder if he ______ us in the discussion tonight.
---I believe if he ________ his homework, he will join us.

I don’t know _____ he will come tomorrow. _____ he comes, I’ll tell you.

______both of us failed to pass the driving test,______ we learned much about driving.

Tim will call me as soon as he______ my package.

_______ well you drive, you must drive carefully.

My uncle has been taught in this school _______ he was twenty years old.