The medicine works more effectively _______ you drink some hot water after taking it.
| A．as | B．until | C．although | D．if |
She asked ________.
| A．what I was doing when she rang me up |
| B．what was I doing when she rang me up |
| C．when she rang me up what I was doing |
| D．when did she ring me up what I was doing |
They discussed ________ they could settle the problem without others' help.
| A．if | B．that | C．what | D．whether |
We all know the truth ___ there are air, water and sunlight there are living things.
| A．where | B．wherever | C．that | D．that wherever |
It ________ Bob drives badly.
| A．thinks that | B．is thought what | C．thought that | D．is thought that |
Is this ________ we met each other two years ago
| A．place | B．place in which | C．where | D．place which |