A good teacher should encourage his students to ____ the knowledge by themselves instead of just copying and memorizing what the teacher said in class.
| A．expand | B．observe | C．digest | D．react |
Some of the roads were flooded, _________ made our journey more difficult.
| A．which | B．it | C．what | D．that |
Look! That fellow is too sleepy to work. He ______ up reading until midnight.
| A．mustn’t stay | B．mustn’t have stayed |
| C．ought not to stay | D．should not have stayed |
According to Lee, it was Ben’s carelessness that _______ the accident. But Ben _______ his wrong doing.
| A．led to; got the hang of | B．caused; got away from |
| C．accounted for; got away with | D．resulted in; went away with |
Even though they are not doubtful at all _______ John will pass the exam, I still wonder ______ he is fully prepared.
| A．whether; that | B．that; whether | C．that; that | D．whether; whether |
Tim is always lying, thus no one will believe _______ he says.
| A．no matter what | B．why | C．which | D．whatever |