The course about Chinese food attracts over 100 students per year, ________ up to half are from overseas.
| A．in which | B．for whom |
| C．with which | D．of whom |
The number of air crashes that _______ in developing countries _________ increasing.
| A．happens; is | B．happen; is |
| C．happens; are | D．happen; are |
Bill suggested ________ a meeting on what to do for the Shanghai Expo during the vacation.
| A．having held | B．to hold |
| C．holding | D．hold |
_________many times, he finally understood it.
| A．Told | B．Telling |
| C．Having been told | D．Having told |
This morning, I rushed to the library, only ________ that its door was still locked.
| A．to be found | B．to find |
| C．finding | D．found |
_______ with so much trouble, we failed to complete task on time.
| A．Faced | B．Face |
| C．Facing | D．To face |