48. Both rice and wheat ____ grown in that country.
A. is B. are C. was D. has
47. They both have some friends; but his ____ more active.
A. is B. will be C. was D. are
44. Mathematics ____ the language of science.
A. are B. are going to be C. is D. is to be
43. ____ either of your parents come to see you recently?
A. Have B. Had C. Has D. Is
41. When and where to build the new factory ____ yet.
A. has not decided B. is not decided
C. are not decided D. have not decided
39. What you said just now____ the matter we are discussing.
A.have something to at B. has something to do with
C.had something to do with D.has been something to do with