问题
选择题
— Do you often go swimming_____ Sunday mornings?
— Yes. Why not _____with me this Sunday?
A．on, go
B．in; to go
C．on; going
D．in going
答案
A
介词on与Why not的用法。在某一天，或某天某段时间用介词on，Why not do sh.?指“为什么不做某事”，do前是省略to的不定式。故选择A。