. ___________ the classroom, the students went to the playground to watch the football match
| A．To clean | B．Having cleaned | C．Cleaned | D．Cleaning |
It is not until ______ that ______.
| A．is a baby kangaroo four months old; he will begin to live outside its mother’s pouch |
| B．is a baby kangaroo four months old; will he begin to live outside its mother’s pouch |
| C．a baby kangaroo is four months old; he will begin to live outside its mother’s pouch |
| D．a baby kangaroo is four months old; will he begin to live outside its mother’s pouch |
Joe has always thought of himself as a good journalist and never fails to ______ everyone of it.
| A．remind | B．cure | C．accuse | D．warn |
Believe it or not, it’s actually impossible to make a 100% ______weather forecast.
| A．thorough | B．professional |
| C．essential | D．accurate |
The stronger the ______ is, the more quickly a person will learn a foreign language.
| A．admiration | B．contribution |
| C．motivation | D．admission |
William, ______ monitor of Class Two, received awards at a ceremony yesterday for giving ______ first aid on a drowning woman.
| A．the; the | B．/; / | C．the; / | D．/; the |