Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines a pair of sentences in the following question.

The driver in front stopped so suddenly. Therefore, the accident happened.

Choose the best answer.

If you spoke more slowly, he _____ you.

We’ll get wet if we ______ out.

If the factory ______ dumping poison into the lake, all the fish and other aquatic animals _______.

If you _____  to take a bus to school now, I ____ you a lift a little later.

If Tom ______ an alarm, the thieves wouldn't have broken into his house.

If local people drink this untreated water, they _______ have cholera.

If I _____  you, I ____ learn one more language.

Lan wishes there ______a smart board in her classroom

If the temperature ______below zero, the water__________.

_____ the boat leaves on time, we will arrive in Paris by the morning.

If she ____ more, she ____ not be overweight now.

I think that if you _____ in his shoes, you ______ in the same way.

If the sea water continues to be polluted, many fish species ______ extinct.

__________more help, I will call my neighbor.

If she _____ Chinese, I believe that she _____  it very well. However, she doesn’t pay any attention to it.