题目
题型:贵州省模拟题难度:来源:
— To tell you the truth, it"s very hard. But we _____ on this problem to improve the situation.
A. were working
B. had worked
C. are working
D. had been working
答案
核心考点
试题【— Is there any better way to help my son get rid of the habit of playing compute】;主要考察你对现在进行时等知识点的理解。[详细]
举一反三
B. are
C. was
D. were
A. takes
B. is taking
C. will be taken
D. has taken
A. did they speak
B. were they speaking
C. are they speaking
D. have they been speaking
B. have played
C. are playing
D. has played
B. are
C. has
D. be
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