Beijing has ______ many buses that there is often a traffic jam in rush hours.
| A．so | B．very | C．too | D．much |
—How unhappy your roommate looks!
—Yes, but he's not willing to tell me what it is _______ is troubling him.
| A．what | B．which | C．as | D．that |
In this district for five months or more of the year, no construction can be done _______ the rainy season makes it impossible.
| A．before | B．while | C．until | D．when |
After ten years, she changed a lot and looked different from _______ she used to be.
| A．that | B．whom | C．what | D．who |
Everything depends on _______ they will support you about it.
| A．if | B．which | C．whether | D．that |
As a new driver．I have to practice _______the car in my small garage again and again．
| A．parking | B．to park |
| C．parked | D．park |