2016年四級作文萬能模板練習：問題解決型

With the ____of____，So it is of great importance for us to____ . On the one hand____, On the other hand____,
    However, we have figured out many ways to _____.Firstly, ____So long as____ . Secondly____, Thirdly____.In fact____, That is because ____.
    In a word,________ .