A. to be put on B. to put on C. being put on D. put on
A. had been done B. done C. having done D. to be done
A. being locked B. to lock C. locking D. having locked
A. To be supported B. Having supported C. Supporting D. Supported
A. work B. .be working C. worked D. working
A. make B. made C. to be made D. making
A. waiting B. waited C. waits D. to wait
A. tying B. tied C. to tie D. ties
A. smiling B. smiled C. smile D. to smile
A. Catching B. Caught C. To catch D. Catch