You had better _____your hands before meads.
—________is the elephant?—It is about 3 meters high and it weighs about 2 tons.
—I’m tired and don’t feel well.—Oh,you should stop________and have a good rest.
Books are made________paper and paper is made________wood.
Please________the TV.I’m going to watch the wodd news on TV.
—Our math teacher stays in the office for a long time every day.—Yes,it________him a long time to check our homework.