“Hurry up, or you will be late for the exam.” My mother told me.
A.My mother told me if I won’t be quick I will be late for the exam.
B.My mother told me if I didn’t be quick I wouldn’t be late for the exam.
C.My mother told me if I didn’t be quick I would be late for the exam.
D.My mother told me if I don’t be quick I will be late for the exam.

“The joke would not be funny if it were translated into French.” Mai said.
A.Mai said that the joke would be funny if it were not translated into French.
B.Mai said that the joke would not be funny if it were translated into French.
C.Mai said that the joke would have been funny if it were translated into French.
D.Mai said that the joke wouldn’t have been funny if it had translated into French.

If we will reduce (A) the speed of population growth (B), there will be less (C) pressure on (D) the earth.
A.on (D)
B.less (C)
C.population growth (B)
D.will reduce (A)

Unless (A) we leave a bowl of (B) water under (C) the sun, it will (D) evaporate.
A.a bowl of (B)
B.under (C)
C.Unless (A)
D.will (D)

If (A) we continue to use (B) fuels at the current rate, we would (C) soon have to face (D) a fuel crisis.
A.to use (B)
B.to face (D)
C.If (A)
D.would (C)

How nice (A) it would be for (B) our parents if (C) we could have built (D) the house for them.
A.How nice (A)
B.be for (B)
C.could have built (D)
D.if (C)

If Columbus _______ money from Queen Isabella, he _______ across the Atlantic.
A.did not receive/ might not have sailed
B.would not receive/ might not sail
C.had not received/ might not have sailed
D.do not receive/ could not sail

“I couldn’t have made it without your help” means
A.I couldn’t have made it if you helped me.
B.I couldn’t have made it if you hadn’t helped me.
C.I couldn’t have made it if you had helped me.
D.I couldn’t have made it if you didn’t help me.

Without your help, I couldn’t overcome the problem.
A.If you don’t help me, I can’t overcome the problem.
B.If you hadn’t helped me, I couldn’t have overcome the problem.
C.If you didn’t help me, I couldn’t overcome the problem.
D.If you hadn’t helped me, I couldn’t overcome the problem.

Thanks to Laura’s report, I was able to finish the project.
A.
B.Had it not been for Laura’s report, I wouldn’t have been to finish the project.
C.If there isn’t Laura’s report, I wouldn’t finish the project.
D.I wouldn’t have finished the project if Laura didn’t help me.