What the teacher and the students want to say _____ that either of the countries ____ beautiful.
My boss insisted that I _______ the work before ten o’clock tonight.
The country has _______ great changes and become a developed one.
We are often _____ by the doctors to eat more healthy food and take plenty of physical exercise.
We asked the teacher to explain _______.
—Did you see a man in black pass by just now?—No, sir. I ______ a newspaper.