what we should do is 后面加todo 或do.为什么不能加doing

what we should do is that protect ourselves. what we should do is to persistence这句话对吗 what should we do today what should we do when there is a typhoon?=what ( ) we ( )do when there is a typhoon what should we do when there is a typhoon?=what ( ) we ( )do when there is a typhoon what do you think ---------do to protect wildlife?A should we B we should C it we shouldD it is we should 为什么选B 不选A what should we do when some thing we want is not on hard?求正常翻译 What is global warming What should we do to keep it slow down? what we should do is 后面加todo 或do.为什么不能加doing what we should do is后面到底加ing还是to do? 帮我看看我的英语作业What should we do when there is a fire?What should we do when we see a fire? We should ---------- what to do next .(consideration) What should we do before meals? we do should what句子排序, what should we do?的回答 What should we do to prevent AIDS? what should we do when there is a fire?中文是什么 What should we do to keep healthy?oneimportant rule is to exercise( ).The F