问题
选择题
____ in1943 _____ the harmful smog made its appearance in Los Angeles. [ ]
A. Only; that
B. It was;then
C. That is was; when
D. It was; that
答案
答案:D
____ in1943 _____ the harmful smog made its appearance in Los Angeles. [ ]
A. Only; that
B. It was;then
C. That is was; when
D. It was; that
答案:D