Răspuns:
You should've finished the report by today.
I can't believe he lied to you,he is to honest for that.
I guess they may leave for Spain this weekend.
The bus might arrive again.
I advise you should not make the same mistake again.
He must did it in purpose.
The the frog could've prevented them from continuing their ascent.
8.srry I don't know
9.not sure
10.You must pay attention to his gestures.