A. constraint B. responsibility C. obligation D. duty
A. has painted B. is painted C. is being painted D. is painting
A. slip B. pack C. gain D. solve
A. until B. after C. when D. since
A. for which B. in which C. of which D. from which
A. will come; will come B. comes; will come C. will come; comes D. comes; comes
A. splash B. resist C. adopt D. occupy
A. that B. which C. when D. where
A. tidy B. sincere C. worship D. merry
A. that B. if C. what D. Whether