Formatting Conjunctive Adverbs

Where should you put the semi-colon (;) in the following sentence:

I might have been robbed in the card contest however we will win another contest.

What is the conjunctive adverb in the following sentence:

I might have been robbed of the card contest; however, we will win another contest.

Where should you put the semi-colon (;) in the following sentence:

All my students are docile thus they can’t be sophomoric.

What is the conjunctive adverb in the following sentence:

All my students are docile; thus, they can’t be sophomoric.

Where should you put the semi-colon (;) in the following sentence:

I really want to give out no homework next week nevertheless we need to show we learned something.

What is the conjunctive adverb in the following sentence:

I really want to give out no homework next week; nevertheless, we need to show we learned something.

Where should you put the semi-colon (;) in the following sentence:

Gas prices are getting high on the other hand I really enjoy driving such a nice vehicle.

What is the conjunctive adverb in the following sentence:

Gas prices are getting high; on the other hand, I really enjoy driving such a nice vehicle.

Where should you put the semi-colon (;) in the following sentence:

You need to put more effort into your work otherwise you won’t get a passing grade.

What is the conjunctive adverb in the following sentence:

You need to put more effort into your work; otherwise, you won’t get a passing grade.