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t ( )4. go and have a look. A. Let’s B. Let C. let us D. let’s ( )5. Amy: Where’s your seat? Mike: A. It near the door. B. Let’s go and have a look! C. It’s the door. D. It ’s near the door. ( )6. Mike: Miss White: OK. A. Let me clean board. B. Let’s me clean the board. C. Let me clean the board. D. Let clean the board ( )7. — Let’s clean the window. — A. Yes. B. OK. C. Sorry. D. Excuse me. ( )8. Where is the mil