—Have you been working in N0.5 Middle School since you graduated from college?
~No, I _______ in the countryside for 3 years.
| A．have taught | B．had taught |
| C．have been teaching | D．taught |
“_____ when does the pub stay open？” “About midnight.”
| A．Since | B．Before |
| C．Until | D．After |
“Shall we stop for lunch _____ shall we drive on？” “Let’s stop for lunch, but the driver can’t drink _____ drive.”
| A．and, and | B．or, or |
| C．and, or | D．or, and |
After they had each said a few words, _____ Lloyd George took the floor.
| A．and | B．so |
| C．or | D．不填 |
Just before I left London, _____ I sent him a telegram.
| A．and | B．so |
| C．or | D．不填 |
If I’m mistaken, _____ you are mistaken too.
| A．so | B．and |
| C．or | D．不填 |