Every minute should be made full ___ of ___ our lessons well.
| A．to use ; study | B．use ; to study | C．used ; studying | D．used ; studying |
The headmaster could not go to the meeting; therefore, Mr. Smith _______ him.
| A．ranked | B．represented | C．took the place | D．modelled |
The policemen regretted _______ as soon as possible at the alarm.
| A．not taking action | B．not to take measures |
| C．taking no actions | D．to take no action |
He didn’t go to detail on the subject. He spoke ________.
| A．in common | B．in particular | C．in general | D．in advance |
When I entered the classroom, I saw Mary ______ at the desk and ______ a letter.
| A．seating; writing | B．seated; wrote | C．sitting; wrote | D．seated; writing |
He remained calm ________ nothing had happened,______ astonished all of us.
| A．as though; which | B．as if; what | C．even if; who | D．so that; that |