I enjoyed your lecture very much, ______ there were some parts I couldn’t quite understand.

In front of the reading room of Yangzhou High School, a notice reads, “When you finish the book, please ________ it on the shelf.”

We sat there, ___ with what we listened to.

reign guests, ____ weregovernment officials, were warmly welcomed at the airport

Do you like the movie Front of the Class—Yes, it’s wonderful. myfriends all like it.