题目内容
桰 don't know ________ with this problem. It's too hard.
梇ou can ask Mr Wang for help.
A. which to do
B. when to do
C. what to do
D. how to do
答案：C
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期末宝典单元检测分类复习卷系列答案
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期末宝典单元检测分类复习卷系列答案题目内容
桰 don't know ________ with this problem. It's too hard.
梇ou can ask Mr Wang for help.
A. which to do
B. when to do
C. what to do
D. how to do
期末宝典单元检测分类复习卷系列答案