Jack wants to get health insurance, ____________ he thinks it's too expensive. (so; but)
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The patient could not decide what to do, ____________ he asked the doctor for advice. (but; so)
I have to take a sleeping pill, ____________ I can't fall asleep easily at night. (otherwise; so)
You must have worked the whole night yesterday, ____________ you look so tired. (but; for)
He works as hard as others, ____________ he is in poor health. (although, when)