Here is an English grammar question from a studying book I bought.
Q. Wash your hands often, _____ you won't catch a cold.
It says the answer is only one.
But I think both 'so' and 'and' are suitable in that sentence.
What do you make of this? Which one do you think the answer is?
Here is another question, which more confuses me.
Sentence: I will take you to a nice restaurant if you won't be busy tomorrow.
___________ → ___________
It is said the sentence needs to be corrected, however I have no idead of where the mistake is.
Frankly, I'm afraid this sentence is correct and makes sense.
On the other hand, since this question was from the part of conjunctive particle,
I guess ' if ' might be supposed to be corrected.
But I don't know for sure. So help me, please.