问题
The rate of racial progress varies in different areas of the country, but in the past ten years _________ more improvement
A:there is
B:it is
C:there have been
D:there has been
B:it is
C:there have been
D:there has been
正确答案是：
同类题型
want help — money or anything, let me know,_______ you
ould report any incident, _______ minor it is.
The man has _________ money, but he has _________ friends.
It is difficult for us to learn a lesson in life_________we’ve actually had that lesson
Let’s go to______ cinema— that’ll take yourmind off the problem for _______ while.