I don’t study as ______ as Amy and always make more mistakes in my homework．

She always finishes her homework on time. She ________ leaves it for tomorrow.

— _________ has Liu Xiang taken part in world’s competitions of 110-metre hurdles?— I’ve no idea. Let’s find it out on the Internet.

Have you finished the work _________?

— Steve is good at writing short stories. — Yes, he is. But he writes          than us, so he doesn’t get good marks in writing.