Question

Which sentences use conjunctive adverbs correctly? Check all that apply. I believe, therefore, that this is the best course of action. Declan wants to swim, instead Ellie wants to play tag. Regular exercise makes you stronger; also, it helps you sleep. You should not sing in the concert if you have a cold, however. Meanwhile, Cassie collected shells on the beach.

Answer 1

When joining independent clauses to write compound sentences, a semicolon is used before and a comma after  conjunctive adverbs.

Regular exercise makes you stronger; also, it helps you sleep.

These sentences connect to a previous one after a full stop by means of  conjunctive adverbs. Commas are required.  

Meanwhile, Cassie collected shells on the beach.  

I believe, therefore, that this is the best course of action.  

Not used correctly:

Declan wants to swim, instead Ellie wants to play tag.  

Instead should be placed at the end.

You should not sing in the concert if you have a cold, however.  

However is not used at the end.

Answer 2

Before to determine the sentences that use conjunctive adverbs correctly, is necesary to explain what the conjunctive adverbs are.

The conjunctive adverbs are words that merge independent articles inside a sentence. And to determine if a conjunctive adverb is correctly written in a sentence, we need to know that there have to be a semicolon (;) or a dot (.) before the conjunctive adverb and always a comma (,) afterwards.

So now, according to the previous, we can conclude that the sentences that use conjunctive adverbs correctly are: 1). I believe, therefore, that this is the best course of action. 2). Regular exercise makes you stronger; also, it helps you sleep. 3). You should not sing in the concert if you have a cold, however. 4). Meanwhile, Cassie collected shells on the beach.