Order the words to make sentences

1)Ive just started this exercise

2)weve already studied this grammar

3)The teacher hasnt arrived yet

4) The test has just started

5) I havent finished this exercise yet

6) Weve already had lunch

I've just started this exercise

We've already studied this grammar

The teacher hasnt arrived yet

The test has just srarted (?)

I havent finished this exercise yet

Weve had already lunch (?)

надеюсь правильно хоть что-то