In1994, China began collecting income tax from citizens earning more than 800 Yuan per month but only 1% people were earning more than _______; now about 60% earn the amount.
| A．this | B．these | C．those | D．that |
Heavy rainstorm broke out in South China,68 lives and 62 still missing.
| A．killing ,leaving | B．killing ,left | C．killed, leaving | D．to kill , leave |
Dr. Smith, together with his wife and daughters , visit Beijing this summer.
A is going to B are going to C was going to D were going to
The experiment shows that proper amounts of exercise, if regularly, can improve our health.
| A．being carried out | B．carrying out | C．carried out | D．to carry out |
Tell me how to operate the electronic computer, ______?
| A．will you | B．shan’t you | C．do you | D．don’t you |
He was told that it would be at least three more months ___________he could receover and return to work.
| A．when | B．before | C．since | D．that |