Many rules in English are ______, and large numbers of students feel ______ them.

He had to have the washing machine _________ last night.

--- You look happy today. Is there anything good?
--- I’m very delighted ______ as one of the exchange students.

I appreciate ______ the opportunity to work in your company two years ago.

The civil war broke out in Libya, ______ to the instability of the international oil price．

_____ on everyday practice, progress in English is a goal which can be achieved．

Noticing some passers-by gathering on the road, Jill looked forward _______ what was the matter.

He is a foreigner and he is not _______like that while he is in China．

It was________ his car after drinking that resulted in the terrible accident doing much damage to his car.

— You should have helped your mom wash the dishes．
—I meant     ．But she is always telling me to study．