When the meeting was over, he _____ writing a report about it immediately.
| A．set off | B．set out |
| C．set forth | D．set about |
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 |
Having answered the phone, I couldn’t but ______ what would happen next.
| A．wondering | B．wondered | C．wonder | D．to wonder |
All of us remember the earthquake that ______ Wenchuan in 2008.
| A．attacked | B．struck | C．knocked | D．exploded |
Paul had to write a history paper, _____ he couldn’t find time to do it.
| A．but | B．so | C．because | D．if |