—What is that noise?
—Oh, I forgot to tell you that the new machine .
| A．was tested | B．will be tested | C．has been tested | D．is being tested |
The weather turned out to be fine yesterday. I the trouble to carry my umbrella.
| A．needn’t take | B．couldn’t take |
| C．needn’t have taken | D．couldn’t have taken |
It was on a lonely island he was found alive after the accident.
| A．where | B．which | C．what | D．that |
______ an accurate map, you might not get lost in the forest.
| A．Use | B．Used | C．Using | D．To use |
The teacher explained a second time, the students should have difficulty in doing the experiment.
| A．although | B．in case | C．so that | D．but |
The damaged building , so the people will have to look for other places to shelter themselves from the cold.
| A．is being repaired | B．is repaired | C．has been repaired | D．was repaired |