The balloon is .

A. Can’t have been B. mustn’t have been

C. shouldn’t have been D. wouldn’t have been

A. from B. in C. before D. into

A, originally B. extremely C. violently D. intensively

A. that B. what C. which D. all

A. taking off B. setting aside

C. getting along with D. putting out

A. trim B. improve C. refine D. repair

A. business B. purchase C. bargain D.sale

A. working B. works C. to work D. worked

A.ate more food and had more physical activities

B.ate less food but had more activities

C.ate less food and had less physical exercise

D.had more weight problems