Considering Conjunctive Adverbs

 You need to work harder ___________ you'll get fired.

• ;otherwise
• ,otherwise,
• ;otherwise,
• otherwise

He is a very weak president; ________________, most people support him.

• otherwise
• instead
• nevertheless
• therefore

We wanted to go to Portugal________________ we went to Brazil.

• instead
• ;instead,
• ;instead
• ;instead,

We wanted to go to the beach; ________________, it started to rain and we stayed at home.

• otherwise
• however
• therefore

She is a very smart woman; ________________, it is not at all surprising that she got the job. 

• nevertheless
• similarly
• therefore
• otherwise

He has a terrible voice; ________________, he will go down in history as the worst singer ever.

• still
• otherwise
• instead

Roberta didn't have all the ingredients to bake a cake; ________________, she decided to prepare something else.

• finally
• indeed
• therefore
• however

I really don't know why he came; ________________, I would tell you.

• otherwise
• instead
• in contrast
• however

Pick the correct use of a coordinating conjunction (FANBOYS)

• The sky is blue. The grass is green.
• The sky is blue, and the grass is green.
• The sky blue; the grass green.
• The sky is blue; and the grass is green.

Pick the correct use of a semi-colon

• I walked to school; but, she didn't.
• I walked to school; didn't.
• I walked to school; she didn't.
• She didn't; walk to school.