Yesterday I was about to leave for the m
题型:选择题
问题:
Yesterday I was about to leave for the market _____ my boss called and asked me to go back to the office at once.
A.when
B.while
C.as
D.because
Yesterday I was about to leave for the market _____ my boss called and asked me to go back to the office at once.
A.when
B.while
C.as
D.because