Either she or I ________ going to give a lecture to the students after class.
| A．are | B．am | C．is | D．has |
Mr. and Mrs. James feel more comfortable on a ship than they would do if they _________ any other way．
| A．travel | B．are travelling |
| C．have travelled | D．travelled |
—Hi, Betty．Would you like to go to see a movie with me tonight?
—Sorry, Mary．_________ tomorrow’s lessons, I have no time to go out with you．
| A．Not preparing | B．Not having prepared |
| C．Not to prepare | D．Being not prepared |
He has made a discovery, _________ of great importance to the progress of science and technology．
| A．I think which is | B．which I think is |
| C．which I think it | D．which I think it is |
Rosy came in for _________ coffee and told me _________ firecrackers outside kept her awake last night．
| A．a; the | B．不填; the |
| C．the; a | D．a; the |
—Dad, where on earth did you put my raincoat?
—Oh, Jim．I forgot to tell you．It _________ behind your bedroom door．
| A．would hang | B．has hung |
| C．is hanging | D．hung |