The Roman Empire _____ for several centuries.
| A．exists | B．existed | C．was existed | D．is existing |
— Have you ever read The Brief History of Time?
— Yes. While in Britain, I ______ it a couple of times.
| A．have read | B．read | C．had read | D．would read |
______ they are most interested in is ______ they can produce more and better
cars.
| A．That;how | B．What;how | C．What;what | D．That;that |
—What's made Tommy so upset?
—I believe______the game.It shocked him so much.
| A．for losing | B．lost |
| C．losing | D．because of losing |
He went there, ______ some books and call on an old friend of his.
| A．bought | B．buying | C．buy | D．to buy |
.Only _____ as an interpreter _____ how important it was to practise speaking English.
| A．when did I work…I realized |
| B．when did I work…did I realize |
| C．when I work…did I realize |
| D．when I worked…did I realize |