求下列兩個句子中正確的句子？若方便可加上說明 （A)How long does it take to fly from Taiwan to Singapore? （B）It needs time and effort to finish the difficult task.?

(A) How long does it take to fly from Taiwan to Singapore?
看來正確：說明怎樣"正確"是很難的吧！
若然問題是必然有錯誤，只能說時態表達上可能作者是假設這問題"不是問對方一般由台灣飛至星加坡的飛行時間，而是在航機上或上機前在櫃枱問職員的話應該會用假試性問題修辭的時態表達將要發生的情況：
How long will it take to fly from Taiwan to Singapore?

(B) It needs time and effort to finish the difficult task.
這句還有些處境性用詞疑問，看似是在那difficult task已經完成了後的評語或自我總結，這樣時態詞便應該是過去式似乎較為合理。
It needed time and effort to finish the difficult task.

希望答對?!

How long does it take to fly from Taoyuan to Singapore.
地點用Taiwan不夠精確。

It takes time and effort to finish a difficult task.
take比need精準（「花」時間和力氣）。a = any比the = that較合適本句。