A. can't B. mustn't C. needn't D. shouldn't
A. more and more busy B. busier and busier C. busy and busy D. the businest
A. When Because C. If D. Through
A. a; a B. an; a C. the ; a D. an; an
A. a; a B. the; the C. a ; the D. the ; a
A. is B. was C. has been D. had been
A. realize B. to realize C. realizing D. realized
A. take B. depend C. bring D. put
A. kill B. save C. remove D. waste
A. more good and more good B. good and good C. better and better D. more and more good
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