问题
选择题
After the summer vacation, the professor, together with his fellow teachers, ______ the scientific experiment
A．goes down
B．go down
C．gets down to
D．get down to
答案
答案：C
考查主谓一致。together with连接两个主语时，谓语动词取决于前者，get down to 开始认真做某事。句意：暑假之后，这位教授和他的同伴老师们开始专心于科学实验。故选C。