The man didn’t know _________ the thief broke into the house and stole all his valuable things

We put on new clothes _______ New Year’s Day. [ ]

The plane ____________when I got to the airport. I nearly missed it.

Do you know if we will go for a picnic this Saturday?—- I think we will if weany classes.

Do you know Peter?—He is a short boy ______ short hair.[ ]