Let’s go and play_______ ping-pong. I don’t want to play_______violin.A、a, the B、the, a C、X, the
---How long did it ________you to solve the problem? ---I _______about half an hour on it.
---Could you come back home at three o’clock? ---_________. I will have a meeting at half past two and it will last two hours.
--- We will build a subway(地铁) in Taizhou before 2015. --- Wow, ________________!
--- Are you happy with your grades in the math exam? ---Not at all. I can’t have ________________.
---What do you often do_______classes to relax yourselves? ---We often do eye exercises, listen to music or do some running around the school.