---Waiter! How soon can I get my food? I just have half an hour left before my train leaves. ---It be ready in five minutes.
Mr. Smith has not yet told me ______ I can go with him to ______ he calls the Underground Treasure House next week.
— I’m really glad to see you back.. ______ your trip to the valley interesting?— No. it ______ very heavily there the whole time.
Look over there-there’s a very long, winding path ______ up to the hill.
It was only quite recently, however, ______ I began to understand how much my parents love me.
My most devoted friend, Professor Yang, _______ often go hiking when he lived in the mountain that was covered with forest.