____we work extra hours everyday_____be able to finish the work before the deadline.

题目

____we work extra hours everyday_____be able to finish the work before the deadline.
A.unless;we will B;only if ;we will
C.unless;will we D.only if ;will we

答案

D
Only +副词/介词短语/状语从句位于句首,句子发生部分倒装.所以选D