Dorothy was always speaking highly of her role in the play,_______ of course, made the others unhappy.
| A．who |
| B．which |
| C．this |
| D．what |
Jack had traveled six miles across the Channel _____his engine failed and was forced to land on the sea .
| A．when | B．until | C．after | D．since |
—When did he leave the classroom?
—He left _____you turned back to write on the blackboard.
| A．the minute | B．the time | C．until | D．before |
____he thought he was helping us with the work, he was actually in the way.
| A．Although | B．Unless | C．Because | D．When |
Hearing his words ,I couldn’t decide _____or remain .
| A．whether to go abroad | B．if I go abroad |
| C．if to go abroad | D．to go abroad |
Questions and exercises are given by the computer, which decides ______ to move the students ahead, review an easier level, ____ give more work on the same level.
| A．either, or | B．both, and . | C．whether, or | D．not only, but also |