Helen plays the piano well, ____her favourite instrument is the violin.
| A．so | B．yet | C．or | D．for |
Between the two buildings ______ a monument.
| A．is standing | B．standing |
| C．stands | D．stand |
The students in our school each ______ an English dictionary.
| A．are having | B．had | C．has | D．have |
More than one answer ______ to the question.
| A．had given | B．were given |
| C．has been given | D．have been given |
What did they do after they _______?
| A．had returned back | B．had come back |
| C．have come | D．were to return |
. It’s wise to ______ the thing in the fridge in hot summer.
| A．preserve | B．protect |
| C．prevent | D．present |