I have to write the words on the paper because she doesn’t know Chinese.A. SometimeB. On

问题补充：

, I have to write the words on the paper because she doesn’t know Chinese.

A. Sometime

B. Once in a while

C. After a while

D. For a while

答案：

A. Sometime

(答案→)B. Once in a while

C. After a while

D. For a while

解析：句意：有时，我不得不把字写在纸上，因为她不懂中文。A某个时刻；B有时；C一段时间后；D暂时；结合题意选B。