As its name indicates, the “American Host Family” program gets American families __________in foreign students' lives in America and offers homes for them.
| A．to involve | B．involving |
| C．involved | D．having involved |
—Shall we go out for dinner or cook at home?
—___________. It’s up to you.
| A．I don’t mind | B．That’s all right | C．Good idea | D．I’m OK. |
Many people claim that they have seen UFO with their own eyes, _____ I personally doubt.
| A．that | B．which | C．when | D．where |
—You _____ a meal this evening. I had dinner at a restaurant with Tom.
—Well, why didn’t you phone me and let me know?
| A．should not cook | B．don’t need to cook |
| C．needn’t have cooked | D．should have cooked |
_____ she heard the news that she won a scholarship, she was very excited.
| A．The moment | B．At the moment | C．For the moment | D．A moment |
American President Obama, together with some members of his government, _____ going to visit China next month.
| A．is | B．are | C．were | D．was |