Question

if the room _________ tidy, Mom will be happy.

Answer 1

If the room is tidy, Mom will be happy.

• The blank above needs to be filled with an auxiliary verb.
• We use an auxiliary verb to depict the tense of a sentence.
• In the sentence above, we use the 1st form of the root verb 'to be' to fill in the blank.
• Usage of 'is' goes along with the sentence and hence is correct to use.

#SPJ3

Answer 2

Explanation:

If the room is tidy, Mom will be happy.