— They speak perfect English. How long have they learnt it?
— ______ they were seven years old.
| A．Since | B．When |
| C．After | D．Until |
She got up early this morning _________ she could catch the first bus.
| A．because | B．so that |
| C．in order to | D．when |
The twin sisters have learned a lot ________ they came to China.
| A．when | B．after | C．since | D．as soon as |
If it tomorrow, we to climb mountains.
| A．doesn’t rain; go | B．won’t rain; will go |
| C．won’t rain; go | D．doesn’t rain; will go |
the movie star goes, there are lots of fans waiting to see her.
| A．Whatever | B．However |
| C．Wherever | D．Whoever |
Jim was watching a late night film______ the television went blank.
| A．while | B．since | C．until | D．when |