Use the correct form of the present perfect simple.
1. lesson / not / start / yet
2. teacher / already / write / on the board
3. Joe and Tim / just / come / into the classroom
4. Tony / not / finished / getting / books ready
5. Christine / already / open / book
6. Dave / drop / pen / on the floor
7. he / not / pick it up / yet
1. The lesson hasn't started yet.
2. The teacher has already written on the board.
3. Joe and Tim have just come into the classroom.
4. Tony hasn't finished getting his books ready.
5. Christine has already opened her book.
6. Dave has dropped his pen on the floor.
7. He hasn't picked it up yet.
1.The lesson hasn't started yet.
2.The teacher has already written on the board.
3.Joe and Tim have just come into the classroom.
4.Tony hasn't finished getting the book ready.
5.Christine has already opened book.
6.Dave has dropped pen on the floor.
7.He hasn't picked it up yet.
