He is a teacher. He has been a teacher ____ 1990.
| A．in | B．until | C．since | D．For |
_________ people are hardly ever tired.
| A．Confident | B．Creative | C．Energetic | D．outgoing |
----Smoking should ____________ in school.
----I agree. It’s bad for our health.
| A．be allowed | B．not allow | C．allow | D．not be allowed |
----Martin Murray used to be afraid of ______ alone.
----But now he realizes that his mother is always there for him.
| A．is | B．was | C．be | D．being |
Our hometown Wenzhou _________ a lot in the last few years.
| A．changes | B．has changed | C．changed | D．will change |
----May I go swimming this afternoon?
----I'm afraid not _______ you have finished your homework.
| A．unless | B．because | C．if | D．though |