1.—You should have thanked her before you left.
—I meant ____,but when I was leaving I couldn’t find her anywhere.
A.to do B.to C.doing D.doing it
答：B
譯：你離開之前應該向她表示感謝的.
我是想這么做的,可要離開的時候,我到處找不著她.
析：mean to do sth.表示“心里想著要做某事”,而mean doing sth.表示“意味著...”所以排除CD
為避免得復,不定式可以省略到to為止.I meant to =I meant to do so.
A.do缺少賓語,反而錯了.
2.Though the foreign students came to our school only a month ago,they ____themselves to the conditions here now.
A.have adjusted B.are adjusting C.had adjusted D.adjusted
答：A
譯：雖然來我校才一個月,這些外國的學生現(xiàn)在已經(jīng)適應這里的環(huán)境了.
析：主句中的時間狀語為now,用現(xiàn)在時態(tài),排除CD.
從句意看,不是現(xiàn)在正在調(diào)整適應,而是已經(jīng)適應了,這才與although句相配.
3.Beneath our feet____that our life depends on for food and clothing.
A.does the earth lie B.the earth lies C.lay the earth D.lies the earth
答：D
譯：我們的腳下是我們的衣食所父母--地球.
析：為避免頭重腳輕,本句用了全倒裝,將作表語用的介詞短語提到句首,帶定語從句（that-從句）的主語the earth放在謂語動詞（lies,是系動詞,可用is替換）之后.