This question tests your understanding of verb patterns, specifically the structure after the verb "plan".

The verb "plan" can be followed by either the infinitive form ("to + verb") or the gerund form ("verb + ing"). However, the meaning can be slightly different.

Step 1: Analyze the main verb "plan"

The sentence begins with "Mr. Hopkins plans on...". The phrase "plans on" is followed by an object. This object must be a noun or a verb acting as a noun (a gerund). Therefore, the first blank must be filled with the gerund form, "having".

Step 2: Analyze the verb "have"

The phrase is "have his students". The verb "have" can be used in the structure "have + someone + do something" (without "to"). This means to cause someone to do something. For example, "I'll have the mechanic check the brakes."

Therefore, the correct structure is "having his students take". The second verb, "take", does not need "to".

Final Answer: The most appropriate words to fill in the blanks are having and take.

The complete sentence is: "Mr. Hopkins plans on having his students take the English test tomorrow."

Related Topic: Verb Patterns

Many English verbs are followed by specific structures. Some common patterns are:

• Verb + to-infinitive (e.g., want to go, decide to leave)
• Verb + gerund (e.g., enjoy swimming, avoid talking)
• Verb + object + bare infinitive (without 'to') (e.g., let him go, make her laugh, have them work)

Knowing which pattern follows which verb is crucial for grammatical accuracy. The verb "plan" can be used with both "plan to do" something and "plan on doing" something.

Key Formula/Structure

The grammatical structure used in the correct answer is:

Subject + plan on + [gerund] + object + [bare infinitive]

In this case: Mr. Hopkins (Subject) + plans on + having (gerund) + his students (object) + take (bare infinitive)...