1.The thief ran away _____ he saw the police.
A. while B. till C. when D. then
2.They both feared ______ honored their teacher.
A. also B. and C. but D. as well
3.He broke the vase ______ his father punished him.
A. since B. after C. because D. so
4.I will send him a gift ______ he comes here.
A. and B. when C. but D. while