A. If B. unless C. though D. since
A. will rain B. rains C. doesn't rain D. won't rain
A. until B. although C. so that D. as soon as
A. very B. so C. such D. quite
A. until B. when C. unless D. if
A. until B. before C. while D. after
A. so B. because C. because for D. because of
A. unless B. though C. if D. after
A. though B. if C. unless
A. If B. Since C. Although D. Because
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