---Lucy, is maths difficult to learn in a foreign school?---I’m not sure, but no subject can be learned well __________hard work.
The Greens used to live in London and now they in Beijing.
—How long does it take to get to the airport?—Forty minutes. But it’s foggy today. I’m not sure the highway will closes soon. Let’s set off earlier.
We arrived at the station too early and had to go, so we sat there and chatted witheach other.
I’m sleepy. I prefer at home to going out for a walk.
—Could you tell me yesterday?—Because my bike was broken on my way here.