Susan's mother looks so young. It's hard to imagine she's already in her ______.
A. sixty B. sixties C. sixtieth
With the development of modern technology, we prefer taking photos with ______ instead of camera.
- I have been to Mars several times.
-You ______ be joking. It's impossible.
A. can B. may C. must
-A Spring Morning is my favorite poem ____ has beautiful words.
-I'm fond of it, too.
A. who B. which C. whom
-What do you think of the film, Captain America: Civil War?
-______
A. It's wonderful. B. It's my pleasure. C. It's very nice of you.
-Ouch! My knees hurt _______.
-Sorry to hear that. You'd better go to see a doctor.
A. badly B. sadly C. quietly
