Write what has happened in each situation : there are no students in the classroom now. Use the Present Perfect with the words in brackets Somebody/invite/ them to the assembly hall
b) The garage door was close, now it's open. Somebody/open/the garage door.
C) My friend's bag is not where she left it. Somebody/steal/my friend's bag.
d) Your book is not where you left it. Somebody/take/ my book.