以下題目是要選出文法錯誤的地方:
1
The reason I will not be going to Mexico this year is because
(A) (B) (C)
I will use up all my travel money attending an important meeting
(D)
in Singapore.
答案是C，為什麼呢？
2
If you knew how many pieces Mary ate for breakfast this morning,
(A) (B)
you would never have doubted why she is overweight.
(C) (D)
答案是A，為什麼呢？
3
For decades, researchers have studied the effects of young blood on
(A)
ageing in mice through a technique called parabiosis, which an old
(B) (C)
mouse is sewn together with a younger one so that they share a
(D)
circulatory system.
答案是C，為什麼呢？
拜託大家幫忙解惑，謝謝！