问题
选择题
---Why did you stop writing?
--- I _____ my writing paper.
A.ran out of
B.have been used up
C.have used up of
D.have run out
答案
答案:A
这题考查词组:run out of“用完”,句意是;我的作文纸用完了。B项use up也是“用完”,但不是被动,D项run out是不及物动词短语。选A。