11.A man so difficult to ____ must be hard to ____ .

They tell us some ways _________English well.

How was your trip to London?—Great. I was helped by an organization. Otherwise, I ______ it.

May I borrow these two books, please?—Yes, you can______ them for two weeks.

Miss Chen teaches _______ English this term. —You’re lucky. _______ is a very good teacher.