Question

add commas, semicolons, or colons if needed. otherwise, submit the text without any additional punctuation. when the richmonds purchased their home, it needed a new roof new siding and windows a new electrical system and new plumbing.

Explanation:

Step1: Analyze the first blank

The items "a new roof", "new siding and windows" are part of a list of things the home needed. To separate items in a list, we use commas. So after "roof", we add a comma.

Step2: Analyze the second blank

"new siding and windows" and "a new electrical system" are also items in the list. We use a semicolon here to separate larger groups of items in the list (since "new siding and windows" is a group, "a new electrical system" is another, and "new plumbing" is the last). Wait, actually, let's re - evaluate. The correct way is: "a new roof, new siding and windows; a new electrical system, and new plumbing." Wait, no, let's do it step by step.

First, "a new roof", "new siding and windows" - these are two items in the first part of the list. So after "roof", comma: "a new roof, new siding and windows". Then, between "new siding and windows" and "a new electrical system", we use a semicolon to separate the two main groups (the exterior and interior work). Then, between "a new electrical system" and "and new plumbing", we use a comma because "a new electrical system" and "new plumbing" are items in the second group.

So the first blank (after roof): comma, second blank (after windows): semicolon, third blank (after system): comma.

So the text becomes: "When the Richmonds purchased their home, it needed a new roof, new siding and windows; a new electrical system, and new plumbing."

Answer:

When the Richmonds purchased their home, it needed a new roof, new siding and windows; a new electrical system, and new plumbing.