When there is a fire,we have to learn___ to callWhen  there  is  a  fire,we  have  to  learn ___ to  call  the  fire ststion and ___ to do.A.how;how             B.wha

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When there is a fire,we have to learn___ to callWhen  there  is  a  fire,we  have  to  learn ___ to  call  the  fire ststion and ___ to do.A.how;how             B.wha
When there is a fire,we have to learn___ to call
When  there  is  a  fire,we  have  to  learn ___ to  call  the  fire ststion and ___ to do.
A.how;how             B.what;how
C.what;what           D.how;what

When there is a fire,we have to learn___ to callWhen  there  is  a  fire,we  have  to  learn ___ to  call  the  fire ststion and ___ to do.A.how;how             B.wha
D 翻译一下句子,应该就可以理解了吧.
当起火的时候,我们必须学会(how)怎么打火警电话和要做什么(what).

ststion..是不是写错了应该是station....我的答案是D。。。因为how to call 是怎样叫消防车。。and what to do是应该要做什么。。想问你几岁。。??

前面半句是说当遇到火灾的时候,我们不得不学习怎么打电话给消防站(ststion n. 车站;驻地;地位;身分 vt. 配置;安置;驻扎)
后半句是说在火灾中通知消防站后该怎么做