----What’s that noise? ---- There’s a truck stopping outside.It’s someone something.
Mary is proud a record by running two laps this year.
is more important is as the earth cooled down, water began to appear on its surface.
life will continue on the earth for millions of years to come will depend on the problem of pollution can be solved.
The fact Lucy has been admitted into Lanzhou university made us excited.
You and I could hardly work together, ______?