1.My name is tom.

Question

You should find an incorrect expression and change it into the correct form.
't' should be changed into 'T'. We have to capitalize the first letter in a person's name.

2. You should write down the answers to the questions.

2-1. You should write down the answers for the questions.

(Which preposition do we have to use? Are both OK?)

3. I am a real estate agent.
I am not a real estate agent.
When you change an affirmative sentence into a negative sentence, you have to put 'not' right after the verb be.

4. I am an architect.
Am I an architect?

When you change a declarative sentence into an interrogative sentence, you have to change the position of the subject and the verb be. Change I and am, and then put a question mark at the end. Then you can make a Yes/No question.

Answer 1

1. It's very good.

2. Both are OK, but the first one is the better of the two.

3. Yes, you are correct.

4. Correct again! =)