All the photographs in this book, ____ stated otherwise, date from the 1950s.
| A．once | B．until |
| C．unless | D．if |
When I was little, my mother used to sit by my bed, _____ me stories till I fell asleep.
| A．having told | B．telling |
| C．told | D．to tell |
The boy wanted to ride his bicycle in the street, but his mother told him _______.
| A．not to | B．not to do |
| C．not do it | D．do not to |
The driver wanted to park his car near the roadside but was asked by the police _____.
| A．not to do | B．not to |
| C．not do | D．do not |
When I got off the crowded bus, I found my pocket _____ and the disk in it with the important documents gone.
| A．stolen | B．missing |
| C．lost | D．picked |
When we saw the road _____ with snow, we decided to spend the holiday at home.
| A．block | B．to block |
| C．blocking | D．blocked |