Many grocery stores use misting, a process ________ vegetables are sprayed with water, to keep vegetable fresh.
With the widespread of fog and haze(雾霾) in central and eastern China, our government is supposed to ______ their efforts to prevent further pollution.
The Yeti is said to be a large, hairy animal walking _____two feet like a human being and moving _____ amazing speed and strength.
— Could you meet me at the airport?— I'd like to,but I'm afraid I ______ a very important meeting when you return.
The science of computer, ______ rapid progress has been made in recent years,plays a very important role in our daily life.
—John is said to have _____ missing since last week. Has he gone somewhere?— Not really. He_______ his newly-bought apartment.