问题补充:
Look, the Maths teacher with his students on the grass to have a good rest at present.
A. is lying
B. is lieing
C. are lying
D. be lying
答案:
(答案→)A. is lying
B. is lieing
C. are lying
D. be lying
解析:句意:看,这个数学老师正在和他的学生躺在草地上休息。with连接两个主语时,重点强调前者,谓语动词的数与第一个名词的数保持一致,本题中数学老师是主语,故用单数形式,lie表示“躺着”,现在分词的形式是lying,故选A