1. ______ about wild plants that they decided to make a trip to Madagascar for further research.

       A. So curious the couple was                            B. So curious were the couple

       C. How curious the couple were                        D. The couple was such curious

2. Judging from his manners at the party, he doesn’t seem ______ much education.

       A. to receive                                                    B. to be receiving

       C. to have received                                           D. to have been received

3. They all returned to the village ______ that the danger was over.

       A. convincing                                                  B. convinced

       C. to convince                                                  D. having convinced

 答案及解析：

1.     B。so …that句型的倒裝結(jié)構(gòu)。so + 形容詞或副詞 + 助動詞 + 主語 + that 從句。

2.     C。live是receive的主語，所以應(yīng)該用主動語態(tài)，而receive education發(fā)生在過去而又對現(xiàn)在產(chǎn)生影響，應(yīng)該選用完成時態(tài)來表達已完成的動作。

3.     B。convinced that=they were convinced that“他們確信”convince意為“使某人相信”，故“他們確信”要用被動語態(tài)，they were 可省略。