Let's analyze each statement in the questions and identify the underlined parts that need correction:

### Question 7:
**Sentence:** Bill is often late to class, which makes his teachers angry.
- **Options for correction:**
A. makes
B. Bill is often
C. to
D. angry

**Correction:** **A. makes**
**Explanation:** The verb "makes" should be changed to "make" to agree with the plural subject "teachers."

### Question 8:
**Sentence:** English, together with Literature and Maths, are compulsory subjects in the national curriculum.
- **Options for correction:**
A. are
B. English
C. with Literature
D. national curriculum

**Correction:** **A. are**
**Explanation:** The subject "English" is singular, so the correct verb should be "is" instead of "are."

### Question 9:
**Sentence:** Nothing can make my grandfather think his mind now.
- **Options for correction:**
A. Nothing
B. make
C. think
D. mind

**Correction:** **D. mind**
**Explanation:** The phrase should be "change his mind" instead of just "think his mind."

### Summary of Corrections:
- Question 7: A
- Question 8: A
- Question 9: D

Let me know if you need further explanations or assistance!