-- Excuse me, sir, smoking in the gas station.-- Oh, I'm really sorry.A. doesn't allow B. isn't allowed C. aren't allowed
We won’t go to the Great Wall until the rain _______.
I will give the message to him __________he comes back.
We won’t go to the Great Wall if it ___________ the day after tomorrow.
---What do you think Sam ________ in 10 years? ---A doctor.
Does he often _____ with your brother?