--- ___________________?--- -K-E-Y, key.
Mr. Lee told us an interesting story yesterday. It made all of us_______ .
I find _______ difficult to finish the work on time. We only have three hours left.
—What are you looking for?—I’m looking for the watch _______ I bought yesterday.A.which B.who C.whose
—Which season do you like _______, summer or winter?— Summer.A.well B.best C.better
—It’s too late. I have to go now.—Oh, it’s raining outside. Don’t leave _______it stops.A.since B.until C.while