Only when something gets lost _____________.
| A．can you realize how important it is to you |
| B．how important you can realize it is to you |
| C．you can realize how important it is to you |
| D．can you realize how important is it to you |
In the dark street，there wasn’t a single person she could turn for help．
| A．that | B．who | C．to whom | D．from whom |
The novel was completed in 1978， the economic system has seen great changes．
| A．when | B．during which | C．since then | D．since when |
The villagers, _________ had been damaged by the flood, were given help by the Red Cross.
| A．all of their homes | B．all their homes |
| C．whose all homes | D．all of whose homes |
I found him sitting in his chair，completely a magazine．
| A．absorbing | B．being absorbed in |
| C．absorbed in | D．absorbing in |
He felt _________ when he found a stranger _________ about at the gate of the police station.
| A．puzzling; hung | B．puzzled; hung |
| C．puzzling; hanging | D．puzzled; hanging |