The river by waste products from the factory. We can find no fish in it.
A. has polluted B. will pollute
C. has been polluted D. will be polluted
She turned her face away from him he wouldn't see her tears.
A. although B. unless
C. because D. so that
By the end of last month, I half of the project.
A. finished B. have finished
C. had finished D. will finish
George's mother will never punish him if he the truth.
A. tells B. will tell
C. is telling D. told
The patient had to have the operation, she would die.
A. or B. but C. and D. so
He kept to start the car and the battery got flatter and flatter.
A. try B. trying C. to try D. to trying
