全民英檢 | 學測/指考 | 國中會考
參考詞彙 附 錄第一級第二級第三級第四級第五級第六級
Because Mr. Chang has been busy these days, it's doubtful he will come to the party.
[連接詞] 是否
Congratulations!
Oops! 正確答案是 whether
