问题补充：
---How’s your idea about your coming weekend?
---I flying to Hainan, but my wife Shenzhen.
A. thought about, decided
B. decided on, thought of
C. thought about, decided on
D. thought of, concentrate on
答案：
A. thought about, decided
B. decided on, thought of
(答案→)C. thought about, decided on
D. thought of, concentrate on
解析：本题考查的时态应该运用一般过去时，而think of或about doing sth，decided on，表示决定于，故选C
