After a number of disagreements with the committee, the chairman decided to __________.
| A．resign | B．retreat |
| C．withdraw | D．retire |
I ______ go to bed until I ______ finished my work.
a. don’t/had b. didn’t/have c. didn’t/had d. don’t/have
In the past 30 years China ______ great advances in the socialist revolution and socialist construction.
a. has made b. have made c. had made d. having made
.When he was at school, he ______ early and take a walk before breakfast.
a. will rise b. shall rise c. should rise d. would rise
If it is fine tomorrow, we ______ a football match.
a. have b. will have c. has d. shall has
_______ today, he would get there by Friday.
| A．Would have left | B．Was he leaving |
| C．Were he to leave | D．If he leaves |