问题补充:
26. The news that scientists so far haven’t found out the cause of bird flu discouraged some WHO officials,?
A. didn’t they
B. did it
C. didn’t it
D. did they
答案:
A. didn’t they
B. did it
(答案→)C. didn’t it
D. did they
解析:可联系答案网客服索取此答案。
时间:2021-10-24 04:03:10
26. The news that scientists so far haven’t found out the cause of bird flu discouraged some WHO officials,?
A. didn’t they
B. did it
C. didn’t it
D. did they
A. didn’t they
B. did it
(答案→)C. didn’t it
D. did they
解析:可联系答案网客服索取此答案。