问题补充:
With two sons in Afghanistan, John and Susie Mayes are working extra hard this year to make sure their grandchildren have a great Christmas.
A. to serve
B. serving
C. having served
D. served
答案:
A. to serve
(答案→)B. serving
C. having served
D. served
解析:考查with复合结构;with的复合结构为:with的复合结构为:with+宾语+宾语补足语;宾语补足语可以是名词,代词,形容词,副词,现在分词,过去分词,也可以是不定式。对宾语的情况进行补充说明。本题的two sons与动词serve构成主动关系,故使用现在分词。不定式表示主动,但是也表示将来。句意:有两个儿子在阿富汗服役,John和Susie Mayes正在努力加班报纸他们的孙子女们有一个很棒的圣诞节。故B正确。