英語選擇-Will you join us to play basketball on Saturday afterno

題目：

英語選擇-Will you join us to play basketball on Saturday afternoon? -________,but I promised to go
-Will you join us to play basketball on Saturday afternoon? -________,but I promised to go swimming with Eric.
A.Never mind B.Many thanks C.No problem D.It's a pity

解答：

B,因爲but表示轉折,所以前面應該是肯定的語氣,而不是樓上所說的it's a pity的否定語氣.而NO PROBLEM一般用於答應,不作爲轉折前提