__________ , some students tend to develop a range of unhealthy habits .
| A．Parents don’t watch over them | B．Not having watched over |
| C．With no parents to watch over them | D．Parents watched over |
.Who is making so much noise in the garden?
__ the children.
| A．It is | B．They are | C．That is | D．There are |
The bridge is 1000 meters length.
| A．with | B．in | C．at | D．on |
.—Is there anyone who is gong the Great Wall?
_______
| A．None | B．No one | C．No | D．Not any |
The two countries were between 1989 and 1992.
| A．peace | B．at no war | C．at peace | D．at peaceful |
His uncle gave him books to read, but after a page or two he would put __book down and pick up__ new one.
| A．the,/ | B．a; a | C．a; the | D．the; a |