----It’s too late, I must go.
----It’s raining outside. Don’t leave ___________it stops.
| A．if | B．until | C．after | D．when |
Jerry Lucas, _______ NBA star, used to be _______ university student.
| A．a; a | B．an; an | C．a; an | D．an; a |
--Thank you very much for showing me how to use the new mobile phone.
--- _______
| A．No problem. | B．Don’t mention it. |
| C．Never mind. | D．No way. |
---Could you tell me ______?
---About two weeks.
| A．how often are we going to be away |
| B．how often we are going to be away |
| C．how long are we going to be away |
| D．how long we are going to be away |
David may wonder ______ yellow was the colour of rulers in ancient China.
| A．that | B．whether | C．if that | D．where |
______ Millie ______ Billy is patient with children. I think they can make excellent teachers.
| A．neither; nor | B．either; or |
| C．not only; but also | D．both; and |