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17. Let’s get ______ the bus. ( )A. on B. in C. up18. Everyone ______ something to do. ( )A. has B. have C. is19. Supermarket workers must ________ and help people. ( )A. friendly B. be friendly20. The office worker in the supermarket must be good at ________ and writing ( )A English B. maths21. Drivers send the things an