As we all know the H1N1 Flu is so serious, students can’t go into the school _______ they take the temperature and get sure they don’t have a fever.

 As we all know the H1N1 Flu is so serious, students can’t go into the school _______ they take the temperature and get sure they don’t have a fever.

#55588

till

after

when

until

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Good to see you again  It's almost three years_____ we met last time

#55585

until

before

while

since

Try not to buy too many things from abroad _________ it may cost a lot of money to bring them back.

#56309

because

so that

Although

— Hurry up, _____you will miss the school bus.— I know that, Mum. I’ll be ready in a minute.

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and

nor

but

He was riding to school         it began to rain.

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while

when

David, get up early, ________ you’ll catch the early bus.

#56425

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and

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