Iv.open the brackets in ivotutnl porfocl continuous or in past perfect continuous: 1. (to learn ) spanish since december. 2. (to smoke) for 20 years when hefinally gave it up. 3.hello jack! how long (to wait) for me? 4.when i arrived, (to wait) for me. 5.your child is so dirty! what (to do)? 6.this (to write) a composition fortwo hours before his parents came.

1) I have been learning Spanish since December.

2) John had been smoking for 20 years when he finally gave it up.

3) Hello! How long have you been waiting for me?

4) When I arrived Ann was waiting for me.

5) Your child is so dirty! What has he been doing? (результат: ребенок грязный, поэтому Present Perfect)

6) This student had been writing a composition for 2 hours before his parents came.

i have been learning spanish since december

john had been smoking for 20 years when he finally gave it up

hello! how long you have been waiting for me

when i arrived ann had been waiting for me

your child i so dirty! what he have been doing7

this student had been writing a composition for 2 hours before his parents came

(не поняла фразу ivotutl porfocl ) надеюсь вы имели ввиду present perfect continuous.