—Who should be responsible for the accident?
—The boss,not the workers.They just carried out the order___
| A．as told |
| B．as are told |
| C．as telling |
| D．as they told |
Most parents encourage their children to take an active part in social events, ______ those events do not interfere with their studies.
| A．concerning | B．until | C．unless | D．provided |
When I try to understand ______ that prevents so many Americans from being happy as one might expect, it seemed to me that there are two causes.
| A．why it does | B．what it does | C．what it is | D．why it is |
Many newspaper printed the governor’s statement ______ would resign his position.
| A．that he | B．was that he | C．in which he | D．and it |
The toddler who miraculously ______ a fall from her 10th-floor home in Hangzhou, east China, ______ recovering quickly.
| A．is survived, is | B．are survived, are | C．survived, is | D．being survived, are |
Thunderstorms have struck northern China, ______ heavy rain and ______ traffic chaos.
| A．brought, caused | B．bringing, causing |
| C．having brought, having caused | D．to bring, to cause |