Could you tell me _____ I must find him. — Sorry, I have no idea. But he was here just now.

New medicines and instruments ______ every day to extend life.

What were you up to when your parents came in? —— I＿＿＿＿＿for a while and＿＿＿＿＿some reading

understanding, a high school graduate hasalready reached a point in his/her life ______ he/she is supposed to makedecisions of his/her own.

The little girl trembled___________fear when she found a snake on the ground.[ ]