﹣Anne，the information you gave is really __________．Thank you very much．
﹣Not at all．I am happy I can help you．（ ）
A．uselessB．ordinaryC．valuable
I still remember my first teacher __________ we haven’t seen each other for many years.
| A．for | B．because |
| C．since | D．Though |
They have been friends __________ they were at primary school.
| A．before | B．as soon as |
| C．since | D．when |
I’ll go to visit my uncle in England ________ the winter holidays start.
| A．while | B．since |
| C．until | D．as soon as |
The mobile phone has changed people’s life a lot ________ it was invented.
| A．until | B．since |
| C．before | D．after |
Getting enough sleep is good for _______ health _______ study.
| A．neither; nor | B．both; and |
| C．either; nor | D．neither; or |