——Do you mi nd if I open the window? ——_______ . I feel a bit cold.
| A．Of course not | B．I'd rather you didn't | C．Go ahead | D．Please close it |
He was walking along the sands _______ he saw a big foot-print in the sand .
A. whileB. whenD. asD. after
_______ he was sleeping , they stole his clothes.
| A．While | B．When | C．As | D．Which |
Jack was very tired _______ he played tennis all afternoon .
| A．if | B．as soon as | C．because | D．before |
______ he finished his work , he left hurriedly.
| A．As soon as | B．As if | C．Unless | D．In order that |
You’ll surly make progress _______ you work with a strong will.
| A．unless | B．until | C．as long as | D．as well as |