I have sugar so I have to buy some.A. run out ofB. useC. ran out ofD. used

问题补充：

I have sugar, so I have to buy some.

A. run out of

B. use

C. ran out of

D. used

答案：

(答案→)A. run out of

B. use

C. ran out of

D. used

解析：根据句意可知糖已经用尽，因此不得不买一些，故用run out of.