--- Hurry up. The bus is coming.
--- Oh, no. We mustn’t cross the street___________the traffic lights are green.
| A．until | B．since | C．while | D．after |
John invited about 40 people to his wedding，most of ________ are family members.
A them B．that C．which D．whom
When I arrived，Bryan took me to see the house________I would be staying.
| A．what | B．when | C．where | D．which |
We have launched another man－made satellite，________is announced in today's newspaper.
| A．that | B．which | C．who | D．what |
Nowadays people are more concerned about the environment________they live.
| A．what | B．which | C．when | D．where |
________ is often the case with children，Amy was better by the time the doctor arrived.
| A．It | B．That | C．What | D．As |