Sure, here are the rewritten sentences:

4. He goes to work at seven fifteen.
- He goes to work at a quarter past seven.

5. The drug store is to the right of the bakery.
- The bakery is to the left of the drug store.

X/P.114

1. My room is smaller than your room.
- Your room is bigger than my room.

2. No house in the street is older than this house.
- This house is the oldest in the street.

3. Quang is 1.75 meters tall. Vinh is 1.65 meters tall.
- Vinh is shorter than Quang.

4. Hang is the fattest girl in my class.
- No girl in my class is fatter than Hang.

5. The Red River is 1,200 kilometers long. The Nile River is 6,437 kilometers long.
- The Nile River is much longer than the Red River.

EX.4P.32

1. How many classes are there in your school?
- How many classes does your school have?

2. That class room is small.
- That is a small classroom.

3. Peter is Mary's brother.
- Mary is Peter's sister.

4. My house has four floors.
- There are four floors in my house.

5. Mr. and Mrs. Black have a son, John.
- John is Mr. and Mrs. Black's son.