不好意思 因考試在即 有好幾題問題請教
1 _____ too expensive, the fertilizer will not be bought by farmers.
a) If b) Since C) Because D) Although
答案是 a)If 我選對 但我不懂 為什麼不是
If being too expensive,
2. Researchers are asking just _____ the futures of teenagers are changed
when so many of them are spending an hour or two on Internet each day, ...
a) how b) what
答案 how
若 changed 後面有to 是否答案就是what
what the futures of teenagers are changed to

1. 只用If 整句就足以表達意思的話 何須多添一詞?2. into會好一點 但要用what的話 changed改成becoming應該會更自然一點