His flight was delayed so he couldn’t be here in time.
A.He would be here in time if his flight were not delayed.
B.He would have been here in time if his flight hadn’t been delayed.
C.He would have been here in time if his flight weren’t delayed.
D.He would be here in time if his flight hadn’t been delayed.

“I will come to see you if I am ready”, she said to Philip.
A.She told Philip she would come to see you if she was ready.
B.She told Philip she will come to see her if she was ready.
C.She said to Philip he will come to see you if he I am ready.
D.She told Philip she would come to see him if she was ready.

“Will you be angry if I steal your pocket dictionary?” She asked me.
A.She asked me if she stole my pocket dictionary, I would be angry.
B.She asked me if she steal your pocket dictionary, I will be angry.
C.She asked me if she steal my pocket dictionary, I will be angry.
D.She asked me if she had stolen my pocket dictionary, I would have been angry.

“If the tree hadn't been so high, he could have climbed it up to take his kite down.” Minh said.
A.Minh said if the tree isn’t so high, he can climb it up to take his kite down.
B.Minh said if the tree hadn't been so high, he could have climbed it up to take his kite down.
C.Minh said if the tree wasn’t so high, he could have climbed it up to take his kite down.
D.Minh said if the tree wasn’t so high, he could climb it up to take his kite down.

“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)