k you should complain, _____, of course, you arehappy with the way things are

We are doing much better _____English ______our teacher’s help.

_____ ashes from the volcano in Icelandhave caused problems for air traffic and business, scientists don’t think itwill have long-term effects on human health.

We __________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

Tom has agreed to let me use his computer to surf the Internet, and _______ I’m treating him to a good dinner at the newly-built restaurant just around the corner.