REVIEW - PRESENT PERFECT SINCE AND FOR / INDEFINITE PRONOUNS

Front

I haven't seen them _____ last week.

Back

since

Front

He's been learning English ___ a long time.

Back

for

Front

My daughter has been playing piano ___ she was 10.

Back

since

Front

You've been studying ___ three hours.

Back

for

Front

She can run ___ two hours without a break.

Back

for

Front

I haven't slept ___ hours.

Back

for

Front

I put my keys _______________.

Back

somewhere

Front

Calm down. There is ____________ to worry about.

Back

nothing

Front

Let's sit down ___________ and talk.

Back

somewhere

Front

I've got ______________ to tell you.

Back

something