Question

It was three months later _____ he completed the job with difficulty.

A．since

B．before

C．while

D．that

Answer 1

D

试题分析：这题考察强调句：结构是：It is/was+强调部分+that/who…,强调的是three months later，句意是：就是在三个月后，他困难的完成了工作。选D。
点评：辨别是否是强调句，可以把强调句结构It is/was…+that/who…去掉，如果句子是完整的就是强调句。