Помогите раскрыть скобки, употребляя глаголы в Past Perfect Continuous.1. He (to

Помогите раскрыть скобки, употребляя глаголы в Past Perfect Continuous.

1. He (to work) there some time when that dreadful accident happened.

2. He told us they (to live) in this district since they had left Paris.

3. The waiter assured me that he (to look) for the watch everywhere.

4. They (to walk) in the garden for an hour when the storm broke out.

5. By that time the twins already (to sleep) for two hours.