Question

complete the sentence with the best verb.
the cactus ______ taller and taller, reaching toward the sky.
grow \t\t grows

Explanation:

The subject "the cactus" is singular. In simple present tense, singular subjects take verbs with an -s or -es ending. "Grow" is the base form (used with plural subjects or first/second person), while "grows" is the correct form for a singular third - person subject like "the cactus".

Answer:

grows