Question

Open the brackets.Use Present Perfect Progresive or Past Perfect Progresive.
1.How long your brother (to work).... as an engineer?
2.He (to work) ...about the house for an hour when smb. knocked at the door.
3.Why are your hands in paint?-I (to paint).....the floor.

Answer 1

1. How long has your brother been working as an engineer?

2. He had been working about the house for an hour when somebody knocked at the door.

3. Why are your hands in paint? I have been painting the floor.