這個要用并列并連詞嗎

請看下面的句子，句子間要用并列連詞嗎？

If I’m mistaken, _________ you are mistaken too.

A. so                        B. and                      C. or                        D. 不填

空格前 if 引導的是一個條件狀語從句，它暗示整個句子為復合句；而so, and, or 為并列連詞，無論選哪一個，都表明整個句子為并列句，從而導致前后矛盾，所以A、B、C均不能選擇。此題正確答案選D，you are mistaken too 為主句。又如：

(1) If wishes were horses, _________ beggars would ride.

A. and                      B. so                        C. or                        D. 不填

(2) When the last prize had been awarded _________ everybody cleared off.

A. and                      B. so                        C. or                        D. 不填

(3) Just before I left London, _________ I sent him a telegram.

A. and                      B. so                        C. or                        D. 不填

(4) After they had each said a few words, _________ Lloyd George took the floor.

A. and                      B. so                        C. or                        D. 不填

答案均選D，空格前分別為 if, when, before, after 引導的狀語從句，空格后為句子主句。