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
Some businesses refuse products from the rainforests so as not to destroy them.
A. buy B. buying C. to buy D. to buying
