“When did he leave the classroom?” “He left _______ you turned back to write on the blackboard.”
| A．the time | B．the moment |
| C．until | D．since |
In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
| A．lie | B．are lying | C．lies | D．lays |
America was____________ was first called" India" by Columbus
| A．that | B．where | C．what | D．the place |
To everybody's surprise, the fashionable young lady ___________ to be a thief.
A. found out B. proved out C, put out D. turned out
Collecting stamps as a hobby___________ increasingly popular during the past fifty years.
| A．becomes | B．became | C．has become | D．had become |
The train was__________ to arrive at 11:30,but was an hour late.
| A．about | B．likely | C．certain | D．supposed |