--- Is it true that Mike refused an offer from Yale University yesterday? --- Yeah, but I have no idea _______ he did it; that’s one of his favorite universities.

How long do you suppose ______ we applied for the job ________ we had been trained . 

 I think the doctor is able to cure of_______he meets.

_____ great progress we have made, we should not be conceited.(自大的)

 —Tom has passed the final exam.—______! He never really worked hard before.