I ___________________ (see) a film a week ago, but I _______________________ (not enjoy) it very much because I _______________________ (already read) the book.

I saw a film a week ago, but I didn't enjoy it very much because I had already read the book.

Step 1: Identify the verb tense used in the sentence. In this case, the verb tense is past simple.

Step 2: Fill in the blanks with the correct form of the verbs.

"I saw a film a week ago, but I didn't enjoy it very much because I had already read the book."

Step 3: Identify the verb in the first blank. In this case, the verb is "see".

Step 4: Determine the correct form of the verb "see" in the past simple tense. In this case, it is "saw".

"I saw a film a week ago, but I didn't enjoy it very much because I had already read the book."

Step 5: Identify the verb in the second blank. In this case, the verb is "enjoy".

Step 6: Determine the correct form of the verb "enjoy" in the past simple tense. In this case, it remains the same as the base form.

"I saw a film a week ago, but I didn't enjoy it very much because I had already read the book."

Step 7: Identify the verb in the third blank. In this case, the verb is "read".

Step 8: Determine the correct form of the verb "read" in the past simple tense. In this case, it is "read".

"I saw a film a week ago, but I didn't enjoy it very much because I had already read the book."

Step 9: Put all the parts together to form the complete sentence.

"I saw a film a week ago, but I didn't enjoy it very much because I had already read the book."