___ he could speak again, I left the classroom.
| A．Not until | B．Before | C．After | D．While |
The British are not so familiar with different cultures and other ways of doing things, ___________ is often the case in other countries
| A．as | B．that | C．so | D．it |
I would have come to see you earlier, but I__________too busy.
| A．had been | B．were | C．was | D．would be |
With summer coming on, the weather gets hot _________.
| A．day after day | B．day and night |
| C．day in and day out | D．day by day |
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