ESL Since / For + Present Perfect Continuous

I have been studying French since I was five.

• correct

• incorrect

She has been reading The Hunger Games since two weeks.

• correct

• incorrect

We have been living in Canada for five years.

• correct

• incorrect

They have been waiting for the bus for twenty minutes.

• correct

• incorrect

They have been living in France since 2015.

• correct

• incorrect

We have been studying chemistry since two weeks.

• correct

• incorrect

She has been studying Spanish _______ September.

• for

• since

She has been studying Spanish ______ two months.

• for

• since

My class has been reviewing geometry ______ three days.

• for

• since

My sister has been playing the violin______ she was ten years old.

• for

• since