Here are the correct options for both exercises:

### 2. Choose the correct options to complete the sentences:
0. I was studying in my bedroom when I **heard** a strange noise.
1. While I was surfing, it **started** to rain.
2. My friends **were playing** football in the classroom when the teacher came in.
3. We walked to the park and then we **had** a game of football.
4. Ed rang me while I **was doing** my homework.
5. We **were packing** our suitcases when the phone rang.

### 3. Complete the email with the past simple or past continuous form of the verb in brackets:
Hi, Mark!

We (0) **arrived** here in New York yesterday. When we (1) **got up** this morning, the sun (2) **was shining**.

It was a beautiful day, so we (3) **decided** to walk to Central Park. While we (4) **were sitting** on the grass, I (5) **saw** my teacher! She (6) **was not** pleased to see me.

See you soon!
Tim