You had one of your teeth pulled out yesterday, ______?
| A．had you | B．hadn’t you | C．did you | D．didn’t you |
More than one doctor _____ involved in the rescue that took place after the earthquake.
| A．was | B．is | C．were | D．are |
Some hard-working students always keep a torch in their domitories _____ there is a power failure.
| A．if | B．unless |
| C．so that | D．in case |
_____ in charge of two classes made Mrs. Li, head of Senior Grade 3, extremely tired.
| A．Leaving | B．Left |
| C．Being left | D．Having left |
Almost every teenager will experience a period in their life _____ they aren’t content with their parents .
| A．when | B．where | C．that | D．which |
Little did the teacher imagine that a student good at maths _____ have failed in the exam.
| A．might | B．should | C．need | D．would |