A. couldn't occur B. needn't have occurred C. couldn't have occurred D. can't occur
A. to talk to B. to talk C. talking about D. whom you talk
A. Being B. Whenever C. When might D. Is
A. For B. Since C. Before D. Because
A. for B. because C. since D. as
A. when B. while C. until D. through
A. if B. in case C. on condition that D. when
Ask B. Asked C. My asking D. I asking
A. with me B. against me C. from mine D. to mine