Some experts have said that ________ children believe they can succeed, they will never become totally confident of themselves.
| A．if | B．since |
| C．once | D．unless |
All the preparations for the task ______, and we’re ready to start.
| A．completed | B．complete |
| C．had been complete | D．have been completed |
If I had _____ , I’d visit Europe, stopping at all the small interesting places.
| A．a long enough holiday | B．an enough long holiday |
| C．a holiday enough long | D．a long holiday enough |
Please tell me _____ you want your coffee, black or white?
| A．when | B．what | C．how | D．which |
The suit fitted him well ______ the colour was a little brighter.
| A．except for | B．except that | C．except when | D．besides |
After the new technology was introduced, the factory produced _____ tractors in 1998 as the year before.
| A．as twice many | B．as many twice |
| C．twice as many | D．twice many as |