Don’t you think that______________ is no use promising without doing?
| A．this | B．that | C．it | D．what |
China has made ______ clear to the world that in the course of its development it seeks for both golden, silver hills and clean water, green mountains as well.
| A．this | B．that | C．it | D．One |
The visitors were admiring the charming flowers ______ it started to rain.
| A．as | B．since | C．while | D．When |
The teacher didn’t imagine that a student good at maths ______ have failed in the exam.
| A．must | B．might | C．need | D．Should |
— You look rather down today.
—______ to board the 4:20 flight, you know, I dared not close my eyes.
| A．Having reminded | B．Being reminded |
| C．Reminded | D．Reminding |
Teachers should bear in mind that each student’s improvement ______.
| A．is closely monitored |
| B．closely monitors |
| C．has been closely monitored |
| D．closely monitored |