I didn’t quite follow him because he explained the theory _____that is too abstract for me.
Today we have chatting rooms, text messaging and emailing, but we seem ______ the artof municating face to face.
Try ________ she might, Sue couldn't get the door open.(2011·全国Ⅰ)
_____, he has a lot of knowledge about computer.
—The middle-term examination is coming. I'm afraid I will fail.—______! I’m sure you can make it.
—I’m worried about the coming test!—______, you can do it!