The dentist would prefer ___ if you could come a little earlier tomorrow.
| A．it | B．them | C．this | D．that |
On AIDS Day, the minister of Health Department demanded that the problems ______ paid special attention to.
| A．referred to being | B．referred to be |
| C．refer to being | D．refer to be |
Maria has written two novels, both of ___ have been made into television series.
| A．them | B．that | C．which | D．what |
—I wonder if you could go with me to the supermarket.
—Sorry. I _______ my experiment report all the morning and haven’t finished yet.
| A．write | B．was writing |
| C．have written | D．have been writing |
_______ a small number of Australians are bitten by spiders each year, most recover without any medical treatment.
| A．While | B．Unless | C．When | D．Because |
This morning I saw an old friend of mine in the street by ______.
| A．event | B．accident | C．affair | D．matter |