He managed to reach the summit of his career, but it was at the ________ of his health.
| A．consumption | B．consequence | C．expense | D．evidence |
Many people believe we are heading for environmental disaster（灾难） _______we radically（根本地） change the way we live .
| A．but | B．though | C．unless | D．in case |
It’s a long trip and we’ll have to ___________ early tomorrow morning .
| A．start off | B．go off | C．take off | D．put off |
The way you thought of _________ the work is very good .
| A．doing | B．to do | C． that do | D．which to do |
The doctor advised Tom strongly that he should take a holiday, but ________ didn’t help.
| A．it | B．who | C．which | D．he |
Our success _____whether everyone works hard or not.
| A．lies down | B．leads to | C．depends on | D．results in |