He’s never read the book The Adventure of Tom Sawyer, _________ he—— _________. He told me it’s very interesting. He’d like to read it again.

a gap year is a good chance for students to learn skills and gain life experience, ______ them an edge in the job market.

I don’t know whether the computer was lost or stolen； , it’s gone

Help me out in the kitchen and I ________ you to a fresh pot of coffee—Sounds good

Before the police ,the alien left the shop .