--- May I go and play with Tom this afternoon, Mum? ---No. You can't go out _____ your homework is being done.
Don't be so anxious about that. Helen________a note.
—Mum, I climbed to get the Teddy Bear from the top of the shelf. —My goodness! You________yourself. You________do that next time.
Sorry, I'm late. I________have turned off the alarm clock and gone back to sleep again.
I posted a book to her three weeks ago. She________have received it.
She________have been to your house. She doesn't know your address.