21. Can you tell me who ...............this kind of machine?
A. invented B. invention C. inventor D. inventive
22. Your teacher writes poems or stories,...............she?
A. don't B. won't C. didn't D. doesn't
23. Excuse me. Can I................in this area?
A. smoke B. smoking C. smoked D. to smoke
24. If he...............a student, he will get a discount.
A. is B. was C. were D. will be
25. Can you turn..............the light? It's too dark.
A. on B. off C. in D. for
26. We can..............easily in the daylight.
A. to read B. reading C. reads D. read
27. What can we do to spend less...............lighting?
A. in B. on C. about D. of
21. Can you tell me who ...............this kind of machine?
A. invented B. invention C. inventor D. inventive
22. Your teacher writes poems or stories,...............she?
A. don't B. won't C. didn't D. doesn't
23. Excuse me. Can I................in this area?
A. smoke B. smoking C. smoked D. to smoke
24. If he...............a student, he will get a discount.
A. is B. was C. were D. will be
25. Can you turn..............the light? It's too dark.
A. on B. off C. in D. for
26. We can..............easily in the daylight.
A. to read B. reading C. reads D. read
27. What can we do to spend less...............lighting?
A. in B. on C. about D. of