— What do you do, Lucy?— I’m a secretary in a foreign company now, but I ______ English in a high school for 10 years.
----It is ______ that self-protection education is required at school. ----I agree. We always have a large course ______ months.
If he is once ______ laughing, he finds ______ difficult to stop.
The hotel porter ______ anybody who wasn't wearing a collar and tie.
Nothing ______ stop us from ______ this plan.
_____ medicine works in a human body is a question ____ not everyone can understand fully.