Put the verb in the correct form of the Perfect Continuous. I (to play) the guitar for a long time when you phoned me.

I (to sleep) for only 2 hours when the alarm clock rang.

We (to sunbathe) on the beach for several hours by the noon.

Mary (to play) with her doll when her brother gave her a ball.

Mark (to choose) a new telephone for an hour before he decided not to buy it.

She said she (to look) for us for an hour.

By tonight I (to keep) to a diet for 2 weeks already.

When he came, she (to cook) dinner for half an hour.​

I had been playing the guitar for a long time when you phoned me.

I had been sleeping for only 2 hours when the alarm clock rang.

We have been sunbathing on the beach for several hours by the noon.

Mary had been playing with her doll when her brother gave her a ball.

Tom has been speaking to the customer since lunch time.

Mark had been choosing a new telephone for an hour before he decided not to buy it.

She said she had been looking for us for an hour.

By tonight I have been keeping to a diet for 2 weeks already.

When he came, she had been cooking dinner for half an hour.​