According to our school regulations, you _____ arrive at school before 7 A.M.
A. may B. can C. will D. should
--- I’ll buy you a ten-speed bicycle as a birthday present.
--- Is that a _________? I wish you would not disappoint me.
A. decision B. presentation C. preference D. promise
Usually an adult man can grow about 1.7 meters tall, _____ a few may grow as short as 1.3 meters.
A. while B. or C. for D. so
The illness of her son is so ______ that she cannot go to sleep at night.
A. satisfying B. worrying C. surprising D. puzzling
_______ you work hard, you won’t solve this problem.
A. Even B. As C. Unless D. Since
My uncle _____ in Taiwan for 20 years. Now he has settled down in mainland.
A. lived B. had lived C. has lived D. was living
