It has been very successful and has led to a 44% 23 in smokers wanting to kick the habit.
答案：(A) increase
an increase in 是「…的增加」，a 44% increase in smokers wanting to kick the habit 指想戒菸的人增加了四成四；change（改變）語意不明確，portion（部分）不與百分比這樣搭配，drop（下降）與前面的 very successful 矛盾。
答對率 32%。
increase 你記得的大概是動詞「增加」（Prices increased.），較少把它當名詞用。名詞的 increase 有固定的字詞搭配：an increase 「in」 + 增加的項目、a 44% increase（增加了 44%），介系詞用 in 不用 of。
前一句 It has been very successful（成效非常好）已經把語意方向定死——既然成效好，接下來的數字必然是正面的變化。本句 has led to a 44% ___ in smokers wanting to kick the habit（使得想戒菸的人…了 44%），填 increase 才與 successful 一致。若填 drop（下降），會變成「成效很好，結果想戒菸的人少了四成四」，自相矛盾。
change 雖然中性，但 a 44% change 語意含糊，讀者無法判斷是增是減，不符合宣傳文案的表達習慣；portion 是「部分、份額」，不與百分比構成 a 44% portion in 這種說法。
國中學過 kick the habit（戒掉壞習慣）這個片語，字面是「把習慣踢開」。本句的 smokers wanting to kick the habit 就是「想戒菸的人」——wanting 是現在分詞後位修飾 smokers。
an increase／a decrease／a drop in（…的增加／減少／下降）、on the increase（持續增加中）、lead to（導致）、kick the habit（戒掉惡習）。
European politicians are trying to get the UK Government to make cigarette companies print photos on the packets. These photos will show 21 smoking damages your health. The shocking pictures include images of smoke-damaged lungs and teeth, with reminders in large print that smokers die younger.
The picture 22 have been used in Canada for the last four years. It has been very successful and has led to a 44 23 in smokers wanting to kick the habit. At the moment EU tobacco manufacturers only have to put written health warnings on cigarette packets 24 the dangers of smoking.
The aim of the campaign is to remind people of the damage the deadly weed does to their body. It is believed that this would be to the best interest of all people, 25 teens who might be tempted to start smoking. These dreadful photos may change the impression among teenagers that smoking is cool and sexy.