Activity 80a: Coloca los verbos indicados entre paréntesis en Present Perfect o Present Perfect Continuous. Verifica luego las respuestas correctas ...

1.  It (rain) for two days and the ground is too wet, so the match (be) postponed.

2.  He (teach) many students but he never (meet) such a bad class as that.

3.  A: What you (do)?
     B: We (pick) bananas.
     A: How many you (pick)?
     B: We (pick) ten baskets up to now.

4.  A: I (make) sandwiches for the party all the morning.
     B: How many you (make)?
     A: I (make) over 200.

5.  Diana (work) for them for over fifteen years and they never (increase) her salary.

Activity 80b: Basándote en las explicaciones anteriores de Mr. Grammar,  SELECCIONA del menú la opción (SINCE o FOR) más adecuada. Verifica luego las respuestas correctas ...

1.  They have been fishing  — FOR SINCE two hours but could not catch anything.

2.  OM Personal English has been online  — FOR SINCE seventeen years now.

3.  Those workers have been on strike  — FOR SINCE July last.

4.  He has been President of Argentina — FOR SINCE sixteen years.

5.  We have been living in Colombia  — FOR SINCE December 2001.

En la próxima página practicarás los dos últimos diálogos de esta lección ...