Present Perfect - Fill in with since or for

My father has worked as an engineer _____________ then.

• since

• for

My sister has known her friend ___________ five years.

• since

• for

I have not seen my aunt ____________ last summer.

• since

• for

I have not talked to him _____________ a long time.

• since

• for

I have not talked to her ___________ last year.

• since

• for

I have learned these words ____________ three hours.

• since

• for

Jason has taught music ___________ twenty years.

• since

• for

My mother hasn't spoken to me ______________ two days.

• since

• for

My brother has had his new mountain bike ___________ last week.

• since

• for

My friend Marco has written me two letters ____________ I saw him last summer.

• since

• for