7. She (A) finds housework (B) bored and (C) doesn't like to (D) stay at home all day.
Error: (B) bored
Correction: boring
Explanation: The adjective to describe "housework" should be "boring" (adj.) instead of "bored" (adj.). "Bored" describes the feeling of a person who is not interested or entertained.
8. The accident (A) looked (B) seriously but (C) fortunately nobody (D) was injured.
Error: (B) seriously
Correction: serious
Explanation: "Seriously" is an adverb, but we need an adjective to describe the accident. So, replace "seriously" with "serious."
9. (A) The noise (B) on the roof of the trailer (C) woke Bill and Fred up (D) very quick.
Error: (D) very quick
Correction: very quickly
Explanation: "Quick" is an adjective. We need an adverb to modify the verb "woke up." So, use "quickly."
10. We (A) all know that we (B) have to work (C) hardly to (D) support the family.
Error: (C) hardly
Correction: hard
Explanation: "Hard" is an adverb used to describe how something is done. "Hardly" means almost not at all.
11. Don't (A) forget (B) calling (C) me as soon as you arrive (D) here.
Error: (B) calling
Correction: to call
Explanation: After the verb "forget," we use the infinitive form of the verb (to + verb).
12. Good friendship should be based on mutual understand.
Error: understand
Correction: understanding
Explanation: The phrase should be "mutual understanding," which means shared comprehension or agreement.
13. They voluntarily spent their vacations to teach illiterate people to read and write.
No errors in this sentence.
14. Sat (A) by the beach (B), I kept thinking (C) about how my life has changed (D).
Error: Sat
Correction: Sitting
Explanation: The present participle "Sitting" is used here to describe the ongoing action while thinking.
15. Listened (A) to his (B) favorite songs, Max checked (C) all the papers and signed (D) the posters.
Error: Listened
Correction: Listening
Explanation: Similar to sentence 14, "Listening" is the present participle used to describe the action happening while Max checked and signed.
16. Impressing (A) by the performance (B), the audience (C) applauded (D) the actor.
Error: Impressing
Correction: Impressed
Explanation: The audience was "impressed" by the performance, which led to their applause. "Impressed" is the past participle form of the verb "impress" used as an adjective to describe the audience.
 

91. **B. Costs**
92. **A. laughed**
93. **C. Being**
94. **A. open**
95. **A. stopping**
96. **D. Keeping**
97. **B. asked**
98. **D. standing**
99. **A. Broken**
100. **B. eating**