Is＿possible to fly to the moon in a spaceship?
| A．now | B．man | C．that | D．it |
The car number 57777 is a special number, ____, I think, passers-by can easily remember.
| A．one | B．what | C．that | D．it |
The government spokesman has to____ his words before responding to reporters.
| A．pass | B．cover | C．weigh | D．Express |
Remember not to telephone me after 7：30 pm, for I ____ the students in the classroom then.
| A．will coach | B．will be coaching |
| C．have been coaching | D．have been coached |
I was on the highway _______ this car went past followed by a police car. They ______ at least 150 kilometers an hour.
| A．when; should have been driving |
| B．while; would have driven |
| C．as; could have driven |
| D．when; must have been driving |
It is not always easy for the public to see _______ benefit a new invention can be of to human life.
| A．whose | B．what | C．which | D．that |