Ôn luyện

When you see your teacher approaching you, a slight wave to attract his attention is appropriate.

This is the instance where big, obvious non-verbal signals are appropriate.

If a boss wants to have a well-qualified staff, he should have to pay his employees ……

 He is one of the most ………. bosses I have ever worked with. He behaves rudely to not only me but also others in the staff.

Oh dear, the light ____ all night.

My father ____.

She ____ French words for hours, but she still doesn't remember all of them.