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
No doubt she will be late. It’s ______ of her to keep all the other guests waiting.
A. original B. logical C. normal D. typical
The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.
A. to stop B. stopped C. stopping D. having stopped
