29．To pass the exam, Li Hua had a busy week ______ to the radio and the tape.
| A．to listen | B．listened | C．listening | D．Listen |
Barack Obama’s first speech as president left a strong impression his audience.
| A．on | B．in | C．at | D．by |
It has been proved eating vegetables in childhood helps to protect you against serious illnesses in later life.
| A．if | B．because |
| C．when | D．that |
we’ll go travelling abroad next year depends on how much we will have earned.
| A．If | B．That |
| C．Whether | D．When |
Many animals use their colours to themselves from .
| A．prevent; eating | B．protect; eating |
| C．protect; being eaten | D．keep; eating |
Barbara Jones offers to her fans is honesty and happiness.
| A．Which | B．What | C．That | D．Whom |