Let’s play _________football instead of playing _______ violin. —Good idea.

I was leaving the office when it suddenly 　　　 to me that I had forgotten my keys.

The travelers arrived _______ Shanghai _______ a sunny day. [ ]

Teacher: Does anyone know 　　　 the famous writer was born? Mei-ling: I know! In Taitung, right? Teacher: You got it!

_____ have you been to Beijing?—Twice.[ ]