3 Find the mistakes in five of the sentences and correct them.

1. Tina looked at me sadly and went away.

2. My brother plays the guitar well.

3. The thief entered the house quietly through the back door.

4. He sat down and opened the letter carefully.

5. The children played in the park happily all the afternoon.

6. Nervously, he talked about what happened that day.

7. The security guard politely asked him to leave.

Объяснение: