问题详情:
The first color TV was constructed in 1928,but it was not until 1938___________the first program was broadcast.
A. when B. which C. that D. before
【回答】
C
知识点:强调句
题型:选择题
问题详情:
The first color TV was constructed in 1928,but it was not until 1938___________the first program was broadcast.
A. when B. which C. that D. before
【回答】
C
知识点:强调句
题型:选择题