The group of students went to the suburb, did some research work, and ________ the water in the river to see if it had been polluted.
A. proved B. boiled C. tested D. exchanged
The president ____ the new economic policy.
A announced B told C informed D promised
Before using the machine, you must ____ carefully to these instructions.
A join B join in C take part in D attend
There are trees and flowers along both sides of the road______ our school.
A leading to B defeated C won D gained
A man is questioned in relation to the _____ murder last night.
A advised B attended C attempted D admitted
If your blood badly, your hands and feet will get cold easily.
A. passes B. crosses C. circulates D. circles
