Present Perfect Tense: Since Vs For

1. He has worked ­___ twelve hours.

• for

• since

1. He has slept ___ the beginning of the class.

• for

• since

1. They have saved their money in the bank ___ twelve years.

• for

• since

1. She hasn’t slept ___ a whole week.

• for

• since

1. The Millers have married ___ fifty years.

• for

• since

1. She hasn’t stopped eating ___ she arrived home.

• for

• since

1. This cat has not eaten ___ last week.

• for

• since

1. Mr. Michael has cleaned the house ___ two hours.

• for

• since

1. He has waited ___ ten minutes.

• for

• since

1. They have been good friends ___ elementary school.

• for

• since