I can still remember that it is since the 1990’s, _____ we began to use cell phones,_______ the number of mobile users has greatly increased．
|
A．while; when |
B．when; what |
C．before; that |
D．when; that |
Every one of us must know this: _________ we live can we save the earth．
|
A．by changing the way only |
B．by only changing the way |
|
C．only by changing the way |
D．by changing only the way |
During the period of recent terrorist activities, people _____ not to touch an unattended bag．
|
A．had always been warned |
B．were always being warned |
|
C．are always warning |
D．always warned |
—What a great cook your sister is!
—Yeah! We ______ never have enough of her cookies．
|
A．may |
B．must |
C．should |
D．can |
It is difficult to find a satisfying job today．This job is great ________ salary, but it has some disadvantages．
|
A．in terms of |
B．in case of |
C．in favor of |
D．on top of |
Some old people don’t like pop songs because they can’t _____so much noise
|
A．concern |
B．tolerate |
C．undertake |
D．ignore |
