单项选择(每题1分)The stones each _____ as much as two tons.
How many times have you found yourself arriving at school to start your day, only ________ that you left your homework at home?
When one makes new friends, don’t forget ______ old ones.
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.