A. playing…playing B. to play…to play C. playing…to play D. to play…playing
A. to knock at B. knock at C. knocking at D. knocked at
A. to mention B. mention C. mentioned D. mentioning
A. to smoke…to smoke B. to smoke…smoking C. smoking…smoking D. smoking…to smoke
A. you tell B. your telling C. for you to have told D. having told
A. to write...to receive B. writing...to receive C. writing...receiving D. to write...for receiving
A. receiving...selling B. to receive...to sell C. to receiving...to selling D. to have received...to have sold
A. saying ...talk B. telling ... say C. talking ...speak D. talking ... tell
A. to fix B. fixing C. for fixing D. fix
A. telephoning to B. to telephone C. to telephone to D. the telephoning to
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