I can never forget the days we worked together and the days we spent together.
| A．when；which |
| B．which；when |
| C．what；that |
| D．when；when |
One way to understand thousands of new words is to have________ good knowledge of basic word formation.
| A．/ | B．the | C．a | D．one |
A sudden blizzard occurred in Beijing last night, ______great inconvenience in transport.
| A．caused | B．causing | C．affecting | D．brought |
About 60 percent of the students ________ from the south, the rest of them ________ from the north and foreign countries.
| A．are; is | B．are; are | C．is; are | D．is; is |
Now Tom with his classmates ________ football on the playground.
| A．play | B．are playing | C．plays | D．is playing |
With two children ______ middle school in the nearby town now, the parents are working hard.
| A．to attend | B．attending | C．attended | D．having attended |