As you can see，the number of cars on our roads________ rising these days.
| A．was keeping | B．keep |
| C．keeps | D．were keeping |
The newly ________ president is going to carry out a series of projects in many fields.
| A．elected | B．electing | C．to elect | D．being elected |
He made a promise ______ he would help me.
| A．that | B．which | C．whether | D．why |
_______ surprised me most was ________ such a little boy of seven could play the violin so well.
| A．That...what | B．What...that | C．That...which | D．What...which |
You can't imagine ____ when they received these nice Christmas presents.
| A．how they were excited | B．how excited they were |
| C．how excited were they | D．they were how excited |
_______ is known to us all that the 2010 World Expo took place in Shanghai.
| A．It | B．As | C．Which | D．What |