Bonjour j' aurai besoin d' aide en anglais svp

HAVE - EN ou HAVE BEEN + ING: Mettez le verbe au Present Perfect avec ou sans BE + ING selon le contexte. Si les deux sont possibles expliquez pourquoi.

1. What you (do)? I (look) for you for ages !" "I (read) old newspapers in the attic"

2. What you (do) with my camera? It (disappear).

3. Look what you (do)! You (break) Mother's favourite vase. How many times she (tellà you to be careful ?

4. Someone (tamper) with this light switch) One of the screws (fall) out, and a wire (come) loose. I'll bet Hilly (try out) his electrician's set again.

5. The choir (rehearse) all day, but the conductor is still not satisfied. He nearly (run) out of patience. They (sing) the same song at least ten times, and he claims they (not improve) a bit. And yet the group (give) concerts for years and each time they (have) great success.

6. Air pollution in our cities (reach) dangerous levels. The number of respiratory infections among city-dwellers (increase) steadily over the past few years, and doctors (discover) other disorders caused by pollution. And yet, even though everybody (know) for some time that motor cars are the main cause of air pollution, few towns (pass) legislation to restrict traffic