—You look so tired. What’s the matter? —
题型:选择题
问题:
—You look so tired. What’s the matter?
—I was so busy that I didn’t go to bed 12 o’clock last night.
A.until
B.unless
C.if
D.so
—You look so tired. What’s the matter?
—I was so busy that I didn’t go to bed 12 o’clock last night.
A.until
B.unless
C.if
D.so