I enjoyed your lecture very much, ______ there were some parts I couldn’t quite understand.
I didn’t know he came back __________ I met him in the street .
About 75% percent of the students can go swimming ____the rest can't.
The beginning of the movie was boring, ______ the end was amazing!
Mr. Zhou was really anxious _____he can’t find his car.
Our team tried our best, we failed the match at last.