---What’s the matter with Christine?
---A letter from her parents in California_____an attack of home sickness.
| A．took off | B．set off | C．gave off | D．sent off |
On March 14, violent crimes in Lhasa of Tibet broke out, _____ 13 innocent people and with more than 300 _____.
| A．killed; injured | B．killing; injured | C．killed; injuring | D．killing; injuring |
Was it when you were attending high school _________you first listened to pop music?
| A．when | B．that | C．which | D．where |
All Hangzhou drivers are required to _________ the departments of traffic control of any changes in their personal information.
| A．inform | B．contact | C．perform | D．tell |
When we got there, he was about to leave. So he only had time to explain _______ to us how he ________ our plan.
| A．impatiently; like | B．limitedly; thought about |
| C．carelessly; thought of | D．roughly; found |
Later in this chapter cases will be introduced to readers_________ consumer complaints have led to changes in the law.
| A．where | B．when | C．who | D．whose |