_____ her mother had come, her face lit up.
| A．Hearing | B．Having heard | C．When heard | D．When she heard |
I was held up for about half an hour in the traffic jam，__________ the delay.
| A．it caused |
| B．thus causing |
| C．caused |
| D．to cause |
Millions of pounds' worth of damage __________ by a storm which swept across the north of England.
| A．has been caused |
| B．had been caused |
| C．will be caused |
| D．will have been caused |
A terrible earthquake struck Ya'an in Sichuan Province，__________ a lot of deaths and damage.
| A．caused |
| B．causing |
| C．having caused |
| D．to cause |
-I don't know how to deal with my son. He always refuses __________ advice I give him.
-He just wants to show he has grown up, maybe.
| A．no matter what |
| B．whatever |
| C．no matter which |
| D．whichever |
__________，the gathering crowd burst into applause.
| A．On entering the hall |
| B．When he entered the hall |
| C．The speaker took his place |
| D．No sooner had the speaker entered |