A. that B. who C. what D. which
A. or B. and C. nor D. but
A. Unless B. While C. As D. Since
A. of B. on C. with D. to
A. What B. That C. This D. Which
A. Completed B. Completing C. Having completed D. To have completed
A. in B. for C. on D. from
A. however B. whenever C. wherever D. whatever
A. he leaves B. has he left C. he left D. did he leave
A. will finish B. would have finished C. have finished D. had finished
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