21.Take your time-it’s just_____short distance from here to_____restaurant.
A.不填；the B. a; the C. the; a D.不填；a
22.-I’m sorry I broke the vase. -Oh,_____. It wasn’t very expensive.
A. you’d better not B. I’m afraid not C. as you wish D. that’s all right
23.Find ways to praise your children often,_____ you’ll find they will open their hearts to you.
A. till B. or C. and D. but
