1 . I would think about it carefully,____________________.  
如果我是你, 我会仔细考虑的。(用if引导的虚拟条件句)

2 . I have often thought it would be a blessing ________________ (如果每个人在刚成年的某个时候能失明、失聪几天).  （根据课文及汉语提示补全句子）

3 . 如果有一台电脑出故障,整个网络系统都会瘫痪。
If one of the computers broke down,the whole networks would ________.

4 . _________ I _________ yesterday’s nucleic acid test, I _________ from traveling.

A．Had; taken; wouldn’t have been restricted	B．Have; taken; wouldn’t be restricted
C．Did; take; wouldn’t be restricted	D．Do; took; wouldn’t have been restricted.

5 . If I_________ ten million dollars, I_________ travel around the world.

A．have; will

B．had; will

C．have; would

D．had; would

6 . ________ each human being stricken blind and deaf for a few days at some time during his early adult life, it would be a blessing.

A．Is

B．Had been

C．Should

D．Were

7 . If I were given another chance, I ________ much better than I did last night.

A．will perform

B．performed

C．was performed

D．would perform

8 . I don't have enough money, so I can't buy a nice car.（变成虚拟语气句子）
________ I________ enough money，I________ ________a nice car.

9 . —Would you mind being charged for WeChat, Mary?
—Certainly. I ________WeChat if I had to pay now.

A．would drop

B．will drop

C．will have dropped

D．would have dropped