Commas with introductory sentences

What is "until" in this sentence?

Until I learn how to drive mom will have to take me to soccer practice.

• adjective

• adverb

• noun

• verb

Tags

CCSS.L.3.1A

Where does the comma go in this sentence?

Until I learn how to drive mom will have to take me to soccer practice.

• Until I learn how to drive,

• Until, I learn how to drive

• No comma

Tags

CCSS.L.4.2C

CCSS.L.6.2A

Why does this sentence have a comma?

Because he loves the smell of fresh grass, Matthew will mow the lawn.

• To separate a dependent and independent clause

• Shouldn't have a comma

• To separate a conjunctive adverb

Tags

CCSS.L.4.2C

CCSS.L.6.2A

Does this sentence need a comma?

Initially I was confused.

• No comma

• Yes. Initially, I was confused.

Tags

CCSS.L.4.2C

CCSS.L.6.2A