You’ve failed to do what you ______ to and I’m afraid the teacher will blame you.
--Mr.Smith is very strict______his students,isn’t he?--Yes,he is.He is strict______his work as well.
The speech by the mayor of Shanghai before the final voting for EXPO 2010 is strongly impressed ______ my memory.
We must ______ known to all that smoking is harmful to heart.
China is larger than ______ around in population.
Susan, ______ university student from Europe, teaches me ______ art in her spare time.