We have planted thousands of trees in recent years. This year _____ we’ve planted ten thousand trees.

It is one thing to enjoy listening to good music, but it is _______ another to play it well yourself.

Tom was caught cheating in an important exam. _____, he lost a golden chance of taking part in this competition.

Tonny’s parents thought he was at school，but________he was in a net bar.

We don’t have to keep these old chairs any more. ________, they are falling apart（支离破碎）.