I insisted that a doctor _________ immediately.
| A．has been sent for | B．sends for |
| C．will be sent for | D．be sent for |
They did not find _____ to prepare for the worst conditions they might meet.
| A．worth their while | B．it worthwhile |
| C．it worth | D．it worthy |
The microphone enabled them to keep in touch, in other words, it made it _____ for them to contact each other.
| A．likely | B．capable | C．possible | D．probable |
She is making herself ill with _____ over her son's future.
| A．trouble | B．annoyance | C．disgust | D．worry |
When products made in factories _____, they are thrown away as garbage.
| A．come to an end | B．are put to use |
| C．are used up | D．wear out |
I _____ her not to walk on the thin ice but she would not listen to me.
| A．warned | B．persuaded | C．suggested | D．noticed |