--Which one do you like best at the fair?
--The monitoring instrument invented by a teenager.
A.made...by hand B.made...for the first time C.made...for me
--Can you tell us something about Li Ao?
--He is a celebrated writer and historian in Taiwan.
A.important B.famous C.humorous
—Just now your boy fell over.
—Yes. Thanks to that young man. He raised his arm to protect my boy.
A.to keep…calm B.to keep healthy C.to keep… safe
—Look! What a dirty river!
—Some people pollute this river.
A.make a mess B.make…dirty C.make…clear
—Things are getting worse and worse.
—This could be bad for US industry.
A.be weak in B.be poor at C.be harmful to
— Can you complete the work today?
—I am afraid not. It’s a little difficult for me to do it by myself.
A.manage B.finish C.prepare
