The split between humans and apes is believed by scientists______15 to 20 million years ago.
A. to be occurring B. having occurred C. to have occurred D. to occur
In China, the number of cities is increasing _____development is recognized across the world.
A. which B. whose C. where D. that
You have been working for hours. It’s no______ you are exhausted. Why not take a rest?
A. doubt B. wonder C. need D. sense
Smith asked you to repeat phone number second time so that he could set it down.
A. the; the B. a; the C. an; a D. the; a
I’m sorry. I was under____impression that you were____ general manager of your company.
A．an；/ B．/；a C．an；a D．the；/
Trapped by the police, the terrorists made their ______ attempt to explode the bomb that they carried.
A. brave B. harmful C. desperate D. considerate
