Try not to cough more than you can________since it may cause problems to your lungs.
| A．check | B．allow |
| C．stop | D．help |
Circus tigers, although they have been tamed, can _____ attack their trainer.
| A．unexpectedly | B．hopefuuly | C．reluctantly | D．willingly |
The _____ of his clothes indicated too clearly that he had been playing football.
| A．state | B．condition | C．occasion | D．situation |
He put in a special _____ for an extra day's holiday so that he could attend his daughter's wedding.
| A．request | B．demand | C．requirement | D．proposal |
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 |
It was clear that the small grocer was _____ people he owed money to.
| A．at the expense of | B．at the risk of | C．in the way of | D．at the mercy of |