It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.
| A．since | B．when | C．That | D．until |
–I wonder how much you charge for your services.
-The first two are free the third costs $30.
| A．while | B．until | C．when | D．before |
you have seen both fighters, will win?
| A．Since; do you think who | B．As; who you think |
| C．When; whoever | D．Since; who do you think |
He was busy writing a story, only once in a while to smoke a cigarette.
| A．to stop | B．stopping | C．to have stopped | D．having stopped |
I like getting up very early in summer. The morning air is so good .
| A．to be breathed | B．to breathe | C．breathing | D．being breathed |
The wet weather will continue tomorrow, when a cold front to arrive.
| A．is expected | B．is expecting | C．expects | D．will be expected |