I think that something has to be done to stop the air from being polluted, ______ ?
| A．doesn't it | B．don’t I | C．don't they | D．haven't they |
Jumping out of ____ airplane at ten thousand feet is quite _____ exciting experience.
| A．/ ; the | B．/ ; an | C．an; an | D．the; the |
Please remind me _______ he said he was going. I may be in time to see him off.
| A．where | B．when | C．how | D．what |
He _____ up the car, hoping to arrive home before dark.
| A．gave | B．turned | C．picked | D．speeded |
I have worked with children before, so I know what ______ in my new job.
| A．to expecting | B．expected | C．to expect | D．being expected |
Though _______ money, his parents managed to send him to university.
| A．lacked | B．lacking of | C．lacking | D．lacked in |