The river near our school has become clean again as new measures have been __________ to prevent it __________ any further.
If you keep on ignoring the teacher’s advice, you will probably get into a situation______ you fall behind others in all subjects.
Whenever we are in ________ , we must never lose ______ , but try to think of the way out.
He must be from America, ____ can be judged from his accent.
I don’t know why she’s looking at me ______ she knew me. I’ve never seen her before in my life.
The police stopped the car______ speed was more than 120km per hour.