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_________surprises us most is that she doesn’t even know _________the difference between the two lies.

Don’t trust such people _____ praise you to your face but speak ill of you behind your back.

_________ the Internet is bridging the distance between people, it may also break some families or cause other family problems.

_____ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.

My English has greatly improved , ______ I practice using it every day.

The suggestion          we should have a discussion on this problem is not the one ________he made.

The result is not the same ____they had expected, _____ was rather disappointing.

The police got to an old school _______the farmers used as a store.

It is an interesting story and one can't put it down _____ one has finished reading it.

_____earth scientists understand how and why earthquakes happen, forecasts are usually inaccurate.