Usually, we don’t know how important something is        we lose it.

• A. or
• B. until
• C. as soon as
• D. after

Don’t forget to wash your hands        you have meals.

• A. before
• B. until
• C. though
• D. unless

—Would you like to go for a walk with me, Alan?
—I’d love to,        you don’t want to go alone.

• A. until
• B. before
• C. if
• D. after

—What shall we do now?
—       it’s raining hard, let’s stay at home.

• A. So
• B. Since
• C. Though
• D. If

We should eat many fruits         apples and oranges.

• A. for example
• B. such as
• C. so as
• D. such like

They didn’t go to bed        they finished their homework.

• A. until
• B. because
• C. when
• D. if

Kelly Clarkson is so popular among young people         her beautiful voice.

• A. because
• B. because of
• C. instead
• D. instead of

My head teacher is very popular in our class         she is quite strict.

• A. although
• B. that
• C. so
• D. when

The doctors tried their best to save the patients’ life,        failed.

• A. or
• B. so
• C. but
• D. because

用所给词的适当形式填空(每空一词)
由于生病了，他没有去上学。
He didn’t go to school ____ ____ his illness.