When to a certain temperature,water can be turned into steam.
| A．heating |
| B．being heated |
| C．heated |
| D．to heat |
The students in our school each an English dictionary.
| A．have | B．has | C．had | D．are having |
The pair of shoes worn out.
| A．was | B．were | C．have been | D．had been |
A professor and a writer present at the meeting.
| A．was | B．is | C．were | D．had been |
His family music lovers.
| A．all are | B．are all | C．is | D．are being |
Those who singing may join us.
| A．are liking | B．likes | C．enjoy | D．is fond of |