It was not until the 1960s and 1970s arc
题型:选择题
问题:
It was not until the 1960s and 1970s archaeologists made real progress in understanding the script.
A.when
B.which
C.how
D.that
It was not until the 1960s and 1970s archaeologists made real progress in understanding the script.
A.when
B.which
C.how
D.that