Continue heating until steam _____.
| A．has appeared | B．appear | C．appeared | D．will appear |
I feel greatly honored _________ into their society．
| A．to welcome | B．welcoming |
| C．to be welcomed | D．welcomed |
The message is very important，so it is supposed _________ as soon as possible．
| A．to be sent | B．to send |
| C．being sent | D．sending |
You can use that ____ tire and it is ______ .
| A．spare; free | B．spare; spare | C．free; free | D．free; spare |
— Is the man our sales-manager?
— No, it ______ not be him he never plays cards.
| A．must | B．can | C．will | D．may |
— I'd rather go to the Blue Moon Restaurant because I prefer soft music while eating.
— _________ Loud music makes me tense.
| A．My pleasure. | B．How so? | C．At your service. | D．Me too! |