_____ of the water _____ polluted. We must try to protect our environment.
A. Two third; are B. Two third; is C. Two thirds; are D. Two thirds; is
He is so poor that he has no house _____.
A. to live B. living C. living in D. to live in
The stones are so heavy. How _____ they _____ to the top of the building without modern machines?
A. do; lift B. did; lift C. were; lifted D. were; lift
No free plastic bag in the supermarket helps to _____ white pollution.
A. reduce B. recycle C. provide D. produce
The young man broke his arm in the accident and had to _____ his job.
A. give up B. put up C. cut up D. pick up
We _____ walk in the park after supper, talking about all _____ we were interested in.
A. used to, what B. were used to, what C. used to, that D. were used to, which
