There ________ great changes in Jiangdu over the past 10 years.

I really enjoyed your lecture, ______ there were some parts I didn’t quite understand.

I guess we ‘ve already talked about thisbefore but I’ll ask you again just _____.

munication, a smile isusually __________ strong sign of a friendly and _______ open attitude.

Would you mind my sitting here— ________________. It’s for my friend.