We have a big library ______ lots of useful books. 

Don’t complain ________ your neighbors. You’d better get on well with them.

 — ______ do you study for tests? —I study_____listening to tapes.

---Why are you standing there, Maggie?---I can’t see the blackboard clearly. Two tall boys are sitting _______ me.

You’d better not always look up the new words ____________ the dictionary while reading. Sometimes we need to guess.