![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
哪些句子正确使用了“疑问词+不定式”作主语()
A.Where to have English class
B.Where to go to the zoo worried me
C.Where to play football is a problem
D.How I can go home is a problem
E.When he will finish the speech (演讲)is unknown
F.When to have dinner hasn't been decided(尚未被决定)
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
ABCDEF
解析:WHERETOPLAYFOOTBALLISAPROBLEMWHENTOHAVEDINNERHASN'TBENDECIDED(尚未被决定)
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)