1.       If only I ______ you wanted to invest money in business.           a. had know               b. knew                    c. have known           d. know 2.       If I were to leave my country, I ______ disappointed.           a. probably be            b. would have been           c. will be          d. would be 3.       If he hadn't wasted too much time, he______ in his examination.           a. would fail              b. wouldn't fail        c. wouldn't have failed  d. won't fail 4.       If I had take n that English course, I ______ much progress.           a. had made               b. would have made c. made                      d. would make 5.       If I were in your place, I ______ a trip to England.             a. will make               b. had made             c. would make           d. made