—What terrible air!
—Yes. It is time to protect the ________.
A. illness B. house C. money D. environment
-How long have you__________ the book? –For three days.
A. bought B. buy
C. had D. borrow
I am afraid of ______ mistakes.
A. make B. making
C. to make D. Makes
-When will the plane_____ Shanghai? -Sorry, I don’t know.
A. get B. arrive C. reach to D. arrive in
–Has Lucy finished her homework _____? - No, not yet.
A. just B. already C. ever D. yet
- Do you often _____ information for your lesson on the Internet? -Yes, I do.
A. find B. discovered
C. search for D. find out