I’m putting on weight. The doctor has warned me to sugar.
| A．keep off | B．keep up | C．keep off | D．keep away |
. It is the first time that I _____ abroad.
A. have been B. was B. will have been D. am
— Let’s go to a movie after work, OK?
— ___________. I am free tonight.
| A．Not at all. | B．What of it? | C．Never mind. | D．Why not? |
It was not until he arrived at the office_____ realized he had forgotten the key. 
| A．and he | B．when he | C．that he | D．he |
. You can’t imagine _______ when they received those nice Christmas presents. 
| A．how they were excited | B．how excited they were |
C．how excited were they | D．they were excited |
. ____ of the land in my hometown ____ covered with trees and grass.
| A．Two-fifths; is | B．Two-fifth; are | C．Two-fifth; is | D．Two-fifths; are |