If you sit in a chair _____a long time, your back may begin to hurt.
| A．at | B．in | C．on | D．for |
Many suggestions ________ at yesterday’s meeting . However , neither the manager nor the engineers could ________ good solutions to the problems.
| A．came up with ; come up | B．came up ; come up with |
| C．were come up ; come up with | D．were come up with ; come up |
--- Whose hair band is this ? ________ it be Kate’s ?
--- I’m not sure . It ________ be hers.
| A．May ; must | B．Must ; may | C．Can ; must | D．Can ; may |
There must be many people ________ for their trains at the train station because of the golden week holiday.
| A． are waiting | B．waited | C．to wait | D．waiting |
The boy preferred _______basketball ________to music.
| A．play; listen | B．playing ; listening | C．played ; listened to | D．playing ; to listening |
Only then ________ that he had lost a good chance of achieving his dream.
| A．he realized | B．realized he | C．did he realize | D．will he realize |