一、单项填空（15分）
1. What if they have the party tomorrow?
A. Happens B. is happened C. will happen D. happen
2. I think that half the class with you.
A. to agree B. agree C. agreeing D. agrees
3. If Mary late tomorrow, the teacher won’t let her in.
A. is B. will be C. be D. was
4. I don’t know if he tomorrow.
A. go climbing B. will go climbing
C. goes climbing D. went climbing
