A) when B) before C) since D) as
A) what is needed B) for our needs
C) the thing needed D) that is needed
A) which B) who C) as D) where
A) provided B) unless C) until D) lest
A) For B) Since C) Before D) While
A) However B) Whenever C) Wherever D) Whatever
A) to hear B) to hearing C) to having heard D) to have heard
A) to start B) having started C) start D) to have started
A) Did B) Done C) Doing D) Being done
A) to arrive … to leave B) arriving …leaving
C) arrived…left D) being arrived… being left
A) robbed B) to have been robbed
C) being robbed D) having been robbed
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