21. Though mathematics____ hard, we all work at it hard.
A. are B. were C. was D. is
22. The rich ______ not always happy.
A. are B. is C. has D. have
23. The old woman, together with her two grandsons, ______ crossing the road.
A. are B. is C. has D. have
24. This pair of trousers ______ Lucy’s. Your trousers ______ on your bed.
A. is, are B. is, is C. are, are D. are, is
25. Ten kilometers ______ a very long way to go in a day.
A. are B. has C. is D. have
26. Climbing hills ______ better than having classes.
A. are B. is C. was D. have
27. Either you or he ______ to stay at home this afternoon.
A. has B. have C. are D. is
28. Neither of the twins ______ bread.
A. like B. likes C. liked D. is like
29. Fish and chips ______ my favorite food.
A. is B. are C. has D. become
30. The singer and dancer ______ come to our city.
A. are B. is C. have D. has
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