Fresh air, enough exercise and nutritious food ______ to sound health

Mr Smith ________ his wife and daughter ________ going to the Great Wall[ ]

She _____ a good teacher. We all like her.

Could it be in the classroom_____ we had a talk last night _____you left your keys?

I don’t know _______he will come tomorrow. _______he comes, I’ll tell you.—That’s a deal!