34. There are 51 students in Class Three, _____ failed in the test.
| A．all of which | B．all of them | C．none of whom | D．none of them |
Energy drinks are not allowed _______ in Australia but are brought in from New Zealand.
| A．to make | B．to be made | C．to have been made | D．to be making |
The disaster is so serious that the people in that area really have a lot of difficulty ______ with their lives.
| A．with going | B．to go on | C．going on | D．in going |
Having a walk after supper is certainly good for the old people, but it remains ______ whether they will enjoy it.
| A．to see | B．to be seen | C．seeing | D．seen |
If better use is _______ your spare time, you will have a more brilliant future.
| A．made of | B．spent | C．used for | D．taken |
The fire made _____ difficult to rescue the people trapped under the ruins in the earthquake.
| A．/ | B．this | C．that | D．it |