1)role
2)burn
3)habitat
4)poisons
<><><><><><><><><><><><>
1)He has been working...
2)Jill has been swimming...
3)How long have you been taking care...?
4)They have been studying...
5)My parents have been donating...
6)The government has been trying
<><><><><><><><><><><><>
1)have been talking
2)has gone
3)cleaned (не особо уверен)
4)has been studying
5)have been working
6)walked
думаю так..
Our son has learned how to read.
Scientists have split the atom.
English has become one of the most popular courses at the university.
I think I have seen that movie before.
Joan has learned two foreign languages.
Have you seen that movie? – I have seen that movie twenty times.
People have travelled to the moon.
James has not finished his homework yet.
The rain has stopped.
She has been in England for six months. Present Perfect has / have + Past participle ( to see-saw- seen)
Health is very important. no wonder many people young or old age lead a healthy lifestyle. a healthy way of life.they do not use alcohol,drugs , bad pills.And it would not zhaluyutsya to life.