Put the verbs in brakets into present simple or present Perfect

Put the verbs in brakets into present simple or present Perfect Continuons.
1Don't walk in here . I ........ ( Just / clean) the floor.
2Jane is hungry. She ......... ( not / eat) anything for six hours.
3 She is tired .She .......(study) for four hours.
4 I don't want to See that film again. I.....( see) it twice already.
5Sandy ........( teach) English for 10 years.
6Chris......( not / do) the washing up yet.
7 He .........( walk) all the morning.
8They .........( play) in the garden for two hours.