| A.only their parents can read them |
| B.only their teacher can read them |
| C.Nobody can read them |
| D.Their teacher can read them |
| A.stop her | B.agree her |
| C.leave | D.smile |
| A.are allowed | B.are important |
| C.aren’t allowed | D.are necessary |
| A.good | B.wrong |
| C.not useful | D.impossible |