(2011·江苏高考)—I left my handbag on the train, but luckily someone gave it to a railway official.—How unbelievable to get it back! I mean, someone ________it.

If I am not __________ when you phone, ask for someone else’s help.

Some students think it is ___ to spend some time surfing the Internet, but we shouldn’t be too dependent on it.

Sara enjoys amusing her friends by________stories.

The teacher asked a very difficult question. It was Ted who finally ____ a good answer.