—What should we do to prevent H7N9 bird flu?
—We must from crowded places.
| A．come out | B．pass away | C．put out | D．keep away |
—does it take you to do your homework every day?
— One hour.
A. How longB. How oftenC. How soon
Mary wanted to go to the partyher parents told her not to.
A. becauseB. or C. but
Don’t tell anybody else what I said. You keep it a secret.
A. canB. mayC. must
--You should not to old people .It is not polite.
-- OK.I won’t do that again.
| A．stand up | B．look up |
| C．talk back | D．look back |
--When you to play the piano?
-- Three years ago.
| A．have ;started | B．will ;start |
| C．do; start | D．did; start |