It remains to be seen North Korea will remain stable under its new young leader.
| A．when | B．whether | C．why | D．that |
Alec asked the policeman he worked to contact him whenever there was an accident.
| A．with him | B．who | C．whom | D．with whom |
Look out! Don’t get too close to the house roof is under repair.
| A．of which | B．which | C．whose | D．what |
Is this the factory you visited last week?
| A．that | B．the one | C．where | D．in which |
I have already told our class teacher that the windows of our classroom require .
| A．repairing | B．being repaired | C．to repair | D．repaired |
Can you tell me____ last year ?
| A．where does Mary work | B．where did Mary work |
| C．where Mary works | D．where Mary worked |