________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.

________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.

#32291

While

Since

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It was a nice meal, __________ a little expensive.

#31951

whether

since

though

Children’s brains cannot develop properly _________ they lack protein.

#30134

because

since

when

unless

. Both look very strong and fast,_____ one runner speeds ahead and wins the race.

#80451

Therefore

And

But

While

You should go to see him when he is so seriously ill.________, he is your brother.

#31732

Because

After all

At all

Above all

You may keep the book for one more week _______no one else needs it.

#31850

provided that

so that

in order that

in case

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