Dioxins are dangerous chemicals________ they can cause cancer and birth defects.

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• Old newspapers can be used to make newspapers, ________ you can collect them and bring them to the recycling center.

• Can you turn_________ the lights? It's too dark.

• Children are _______ to overcome problems.

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• What are you looking ________? My picture book. I've lost it.

• Who is going to __________ your children when you're at work?

• We decided not to go out for meal _________ we were too tired.

• My father used to make me ________hard at night.

• Scientists are looking for an ________ way to reduce energy consumption.

• My shoes are dirty. I'd better take them ________before I come in.

• Ba missed the Math test yesterday. ________, he will have to do it next week.

• They are completely short of water now. A number of people have died because of this ___

• Who is Mr. Medley? - I have no idea. I've never heard _______ him.

• He didn't go to school yesterday; ______, he had to ask his friends what they learned then.

• I've never ______very well with my brother. We've got completely different personalities.

• A new conditioner will be ________ this morning.

• Organically grown fruits and vegetables may not look as perfect, ________ they're good for your health.

• We can ________ easily in the daylight.

• That's the _______ interesting novel I've ever read.

• Hoa missed the bus this morning, ________ she went to school late.

• Daisy is very nice; ________, all her friends love her very much.