What impresses me most is ________ he appears in front of others, he wears a sincere and charming smile.
| A．what | B．which |
| C．that where | D．that whenever |
—What do you think of teaching，Bob?
—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
| A．where | B．which | C．when | D．that |
At the party，John made up a joke，________ people burst out laughing.
| A．on which | B．by which | C．at which | D．from which |
Occasions are quite rare ________ I have the time to spend a day with my kids.
| A．who | B．which | C．why | D．when |
Portia，for ________ physics had once been very hard，turned out to be a physicist.
| A．whom | B．whose | C．that | D．which |
Wind power is an ancient source of energy ________ we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
The man showed us such a heavy stone ________ no one could lift it.
| A．that | B．as | C．which | D．and |
—What do you think of teaching，Bob?
—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
| A．where | B．which | C．when | D．that |
It's helpful to put children in a situation ________ they can see themselves differently.
| A．that | B．when | C．which | D．where |
Whatever is left over may be put into the refrigerator，________ it will keep for two or three weeks.(2011·安徽)
| A．when | B．which | C．where | D．while |
I wish to thank Professor Smith，without ________ help I would never have got this far.(2012·天津)
| A．who | B．whose | C．whom | D．which |
They've won their last three matches，________ I find a bit surprising actually.
| A．that | B．when | C．what | D．which |
______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
| A．That; what; change | B．When; that; to change |
| C．What; when; change | D．What; that; changing |
Amazing it is, an astronaut’s superior position is filled with potential danger.
| A．when | B．if | C．unless | D．as |
—Children must have access to good books.
—I can't agree more. Reading is to the mind ________ food is to the body.
| A．that | B．what | C．like | D．as |
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