You should go over your test paper ________ you hand it in.— OK, Mr. Wang.

The husband rushed to the hospital ____he heard that his wife was injured

Don’t you think that was a ______ night? –Yes, we were almost ______ to death by the shaking of the earth.

She is _____ careful girl ______ she hardly makes mistakes in the exam

At a rough estimate（估计）, Nigeria is ____ Great Britain.