题目
题型:专项题难度:来源:
b. have been
c. are
d. is
答案
核心考点
试题【Every means _____ tried but without much result. [ ]a. has been b. have been】;主要考察你对动词的被动语态等知识点的理解。[详细]
举一反三
b. is being kept
c. have kept
d. have been kept
b. has been done
c. have done
d. have been done
B. has done
C. have done
D. were done
C. has been taken in
C. have taken in
D. has taken in
B. has been finished
C. have finished
D. have been finished
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