Answer:
1. Colon
2. Comma
3. Colon
Step-by-step explanation:
Rules for using a comma:
1. Use a comma before any coordinating conjunction (and, but, for, or, nor, so, yet) that links two independent clauses. ...
2. Use a comma after a dependent clause that starts a sentence. ...
3. Use commas to offset appositives from the rest of the sentence. ...
4. Use commas to separate items in a series.
The colon is used to separate two independent clauses when the second (clause) explains or illustrates the first (clause). In such usage, the colon functions in much the same way as the semicolon. As with the semicolon, do not capitalize the first word after the colon unless the word is ordinarily capitalized.