Present Perfect Progressive

Why are you so wet?

I have ....... walking in the rain.

The boys are dirty, because they .............. been playing football all afternoon.

We'll get some pizza, because I have been ........... (work) all day and I haven't had time to cook.

His eyes are so red, because he ....... been watching TV for long hours.

She hasn't finished her work yet, because she ..... been talking on the phone all afternoon.

I don't know where the bus is, we have been ....... (wait) for it for a half an hour now.

Mr Roberts has been teaching at our school ..... 20 years.

• since

• for

My grandfather has been collecting stamps ..... 1954.

• since

• for

The soldiers ......... been fighting for 2 days.

She has been .......... (clean) her room since 9 o'clock.