Question

— 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

Answer 1

A

【解析】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。