Why do we need to wash our hands freuently?用英文答

Why do we need friends? Why do we need friends? why do we need plants Why do we need sleep Why do we need soil?怎么回答? Do you need to do homework?why? What we need to do is to help others,not to find why they need help是什么意si 急求英语作文Why do we need to learn?英语作文 100字左右 why do we need to consider when making travel plan用英语回答我 Why do we need to wash our hands freuently?用英文答 current network 啥意思why do we need to update our current network?啥意思?谢喽 . Why do people need to play sports Everything we need to do ___(do) We need to do marketing research是什么意思 What do we need to take photos? who do we need to excite? we do not need to 原题是这样的：this may also explain why we are not usually sensitive to our own smells ————we do not need to be。 What do trees need? Why do we need trees? 求英语回答