1. — Clark, your room is really in a mess. It needs ________．
— Sorry, mum. I'll do it at once.
A. clean
B. cleaned
C. to clean D. to be cleaned
2. — “Frog”， Mo Yan's latest novel, please!
— Sorry, it ________ just now. But it will come out again soon.
A. sold out
B. is sold out
C. has sold out
D. was sold out
3. --- Who designed this game?
--- It _______ by Tom in 1999.
A. is designed B. designs C. was designed D. designed
4. —Do you know Earth Day?
—Sure. It in 1970 to tell us to pro ...