---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work.
| A．Every | B．Each | C．Both | D．All |
I like music that I can dance____ .
| A．with | B．to | C．along | D．on |
Tonny is afraid ______, because he was bit by a dog.
| A．fly | B．to flying | C．flying | D．of flying |
He ______ would do great thins should not attempt them all alone.
| A．whom | B．who | C．whose | D．which |
It is ______ of a problem to be poor than to be dishonest.
| A．more | B．little | C．much | D．less |
The monkeys escaped ______ the zoo yesterday evening.
| A．on | B．of | C．from | D．out |