A. that have B. that have been C. which has D. which has been
A. who B. whose C. of whom D. which
A. where B. that C. of whom D. which
A. to whom B. about whom C. about who D. whom
A. that; it B. which; whom C. that; which D. which; that
A. so that B. even if C. in case D. now that
A. Because B. As C. While D. If
Although B. While C. Since D. Unless
A. Whatever B. Whenever C. Whoever D. However
A. before B. after C. until D. when
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