2. Animals are silly.
3. Animals are wild.
4. Animals can swim in the lake.
5. Animals like to eat fish.
My friend phoned yesterday, but he didn`t leave a message.
How long had you been waiting before the rescue team arrived?
1. I saw him cross the street.
2. He hasn’t heard her shout.
3. They watched attentively the action to unfold.
4. She felt the train start.
5. It was interesting to observe the moon to go red.
6. Her mother noticed me play the game.
<span>1-my brother and I have been cleaning my room since 2 o'clock
2-we had already been cleaning our room for an hour when mum came home.
3-she said they had been building that house all that year
4-Have they been building their house all this summer?
5-how long has your brother been working as an engineer?</span>