For or since

I have been waiting______ 4 o'clock.

• For

• Since

Sue has only been waiting ______ 20 minutes.

• Since

• For

Tim and Tina have been learning English _________ six years.

• Since

• For

Fred and Frida have been learning French _____ 1998.

• Since

• For

Joe and Josephine have gone out together _______ Valentine's Day.

• For

• Since

I haven't been on holiday_______ last July.

• For

• Since

Mary has been saving her money ________ many years.

• For

• Since

I haven't eaten anything ________ breakfast.

• Since

• For

She hasn't written _______ Christmas.

• For

• Since

Carol hasn't eaten meat ______ ages.

• For

• Since