The elderly should _________ politely. Also, they must ___________ well.

--- Where is your mother?
--- She has ______ to Sichuan on business. She has ______ there four times recently.

It ____ over 10 years since my grandpa _______.

---Has Tom finished his homework?
---I don’t know.  But he _________ it the whole morning.

Miss Jones___________Wuxi for one year, but she ________ the Tai Lake.

The old man _______ since ten years ago.

--Let’s go fishing if it ______ this weekend.
--But nobody knows if it ______.

Jane _____ the piano every Sunday.But she _____computer games now.
A.plays; is playing    B.plays;plays        C.is playing;is playing

The lamb _________already. It_ __________for 2 days.

They’re late. The film _______ for half an hour.