23. A number of students _____from the south.
A. are B. is C. have D. has
22. No one except my parents _____anything about it.
A. know B. knows C. is knowing D. have known
21. This pair of shoes ____made in Nanjing.
A.is B. are C. have been D. had been
20. Between the two rows of trees _____the teaching building.
A. stand B. stands C. standing D. are
19. They each ____ a beautiful handkerchief.
A. have B. has C. there is D. there are
18. Each of the students _____ a Chinese-English dictionary.
17. Mathematics ____the language of science.
A. are B. are going to be C. is D. is to be
16. Half of his goods ____ stolen the other day.
A. are B. were C. is D. was
15. That they were wrong in these matters _____ now clear to us all.
A. is B. was C. are D. were
14. Although the first part of the book is easy， the rest ______.
A. are difficult B. has proved difficult C. is supposed difficult D. have been found difficult