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

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

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

My sister is very tired; ________, she still has to cook dinner for the family.

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

The countryside is very peaceful ________ the air is so fresh.

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

My father used to make me ________hard at night.

____ lion dancing is very popular in Viet Nam, my friend Andy does not enjoy it

Children are _______ to overcome problems.

My color TV, _______ I bought 10 years ago, still gives beautiful pictures.

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

A new conditioner will be ________ this morning.

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

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

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

He is very stubborn, so it will be difficult to _______ him to go.

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

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

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

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