28. The students _________ studied English for a month.
A. has
B. had
C. are
D. have
28. The kids _________ learn ABC for one week.
A. has
B. had
C. are
D. have
45. Students _______________English Phonetics books.
A. has
B. are
C. having
D. have
45. they _______________English stories.
A. has
B. are
C. having
D. have