____ the PX project will be called off depends, for it still needs more research and discussion.
| A．That | B．Whether | C．Where | D．What |
The headmaster will not permit the change in the course, norit a thought.
| A．does he even given | B．he even gives | C．will he even give | D．he will even given |
It was 80 years before Christopher Columbus crossed the AtlanticZheng He sailed to East Africa
| A．when | B．that | C．after | D．since |
Before you quit your job, how your family would feel about your decision.
| A．consider | B．considering | C．to consider | D．considered |
All the photographs in this book,stated otherwise, date from the 1950s.
| A． | unless | B． | until | C． | once | D． | if |
—Can I call you back at two o’clock this afternoon?
—I’m sorry, but by then I______ to Beijing. How about five?
| A．fly | B．will fly | C．will be flying | D．am flying |