The postman shouted, “Mr Green, here is a letter ______ you.” [ ]

It’s 9 o’clock now. I must go.—It’s raining outside. Don’t leave ________it stops.

The coat is very nice. Can I ______?

All the students are talking and laughing in the classroom and it’s _________.

Although Little Binging got a very serious illness, people didn’t ___________ this poor baby and tried their best to save him.