open the brackets.use present perfect progressive or past perfect progressive
1-my brother and I (to clean) my room since 2 o'clock
2-we already (to clean) our room for an hour when mum came home.
3-she said they (to build) that house all that year
4-they (to build) their house all this summer?
5-how long your brother(to work) as an engineer?
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1-my brother and I have been cleaning my room since 2 o'clock2-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?