幫忙解釋一下幾道初中的英語(yǔ)題目
1.I think ______nessecary to look for more information about the book.
A.it B it wasC that D this
(我選了B,可正確答案是A,it was 不可以嗎)
2.I like watching TV______to the cinema.
A more than to go B more than goingCthan goingD rather than to go
(我選了C,可正確答案是B)
3. She felt bad for_____a chance to study abroad.
A having not givenB nothaving given Chaving not been given D not having been given
(我選了A,正確答案是D)
4. Ladies and gentlemen,now please allow me to ______Mr Wang to you.
A showB introduceC recommendD invite
(我選了C,正確答案是B,“介紹”和“推薦”有很大區(qū)別嗎)

其實(shí)這些題目我之前都百度過(guò)的,但他們都說(shuō)的不清楚,把我越搞越暈了~~
所以拜托哪個(gè)英語(yǔ)好的解釋一下耶!
不要太羅嗦,我看到一大堆不知道在講什么的文字就惡心的~~
（說(shuō)得清楚就行）