A. had been B. were C. have been D. would be
A. to work B. work C. working D. worked
A. to swim B. swimming C. swim D. swam
A. without knocking to B. without to knock
C. without to knock at D. without knocking at
A. to be a student B. be a student
C. being a student D. am a student
A. to arrive B. had arrived
C. arrive D. has arrived
A. to wave B. being waved
C. waving D. waved
A. interested B. interest
C. interesting D. to be interesting
A. win B. in winning
C. to win D. winning
A. to read B. reading C. to be read D. for you reading
A. walking B. walked C. to walk D. walk
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