He was educated at the local high school, ______ he went on to Beijing University.
| A．at which | B．after which | C．in which | D．during which |
He studied very hard all the time because he didn’t want to __________in his studies.
| A．fall behind | B．be left behind | C．left behind | D．Both A and B |
Does this meal cost $50? I __________ something far better than this!
| A．prefer | B．expect | C．suggest | D．suppose |
. This race was her last chance to win a place on the national team so everything was __________.
| A．dangerous | B．in stake | C．at stake | D．in charge |
I smell something __________ in the kitchen. Can I call you back in a minute?
| A．burning | B．burnt | C．being burnt | D．to be burnt |
If _________, the bird flu would produce a powerful poison that would kill the patients.
A. not treat B not treated C untreated D. Both B and C