—have you visited the Summer Palace?—Nerver.
| A．When | B．What time |
| C．How long | D．How many times |
—Who has been to the USA?—.
| A．None | B．Nobody | C．All of | D．None of |
Do you know the answer the question?
| A．with | B．to | C．of | D．on |
Tom’s mother has twice.
| A．been abroaded | B．went abroad |
| C．gone abroad | D．been abroad |
The woman asked the doctor for some .
| A．advice | B．advices | C．advise | D．advises |