—I hope you can go to the cinema with us. —I’d love to, _ I can’t.
—Look! The lights in the classroom are still on. —Oh, I forgot ________.
She found ___ hard to finish the work by herself.
Good learners aren’t afraid _______mistakes. Instead, they learn ________mistakes.
My parents want to go ____ on vacation.
Why not consider _________ Kunming next holiday?