1 . Our flight ____________ (take) off; let’s hurry up，or we will miss it.(所给词的适当形式填空)

2 . Our manager ________(leave) for Shanghai in a few days and he has asked me to find out when the earliest plane ________(take) off next Wednesday. (用所给词的适当形式填空)

3 . —Is there any possible way to help them get rid of such a bad habit?
—To tell the truth, it’s very hard. But we________(work) on this problem trying to improve the situation.(用所给词的适当形式填空)

4 . Do you know the man who ________(talk) with your mother at present? (用所给词的适当形式填空)

5 . The professor________(write) a book about Chinese history these days. （用所给词的适当形式填空）

6 . Since it________(rain) hard now, you may as well stay here until it stops. （用所给词的适当形式填空）

7 . I’ve never been to Beijing, and I _____________ (go) there with my parents during the holidays. (所给词的适当形式填空)

8 . The paints for the art class _____(run out).We must act immediately before there’s none left. (所给词的适当形式填空)

9 . — Hello, can I speak to Mr Black?
— Sorry, madam. He __________ (give) a lecture in the hall. (所给词的适当形式填空)

10 . According to the timetable, the train for Beijing ________(leave) at four this afternoon, so I ________(leave) for the station at 1:00 p.m. (所给词的适当形式填空)