Question

__, i think and all the prblems could be solved

A if you make more efforts B making more efforts
c make more efforts D you could make more efforts

Answer 1

当然选C，楼主不要被楼上的误导。
名词短语作状语，属于一个祈使句：.Make more efforts ,I think ,and all the problems could be solved.这句话也可以变成这样：A bit more efforts,I think and all the problems could be solved.
and连接两个并列句，前一句不用任何引导词（if,when等），故A项不正确
and连接两个并列句也不能与分词连用，故B项不正确。
希望帮到楼主。

Answer 2

A

追问

为什么

追答

逻辑关系

Answer 3

A

追问

为什么

Answer 4

A如果你再努力一点