Chang’e-3 landed on the moon on Dec 14, China became the third country _________ this after the US and the former Soviet Union.

There’s wrongwith my chair. Can you mend it?— No problem.

I spent half an hour ________ the piano every day.

past few years, sea ice ____ in the Arctic as aresult of global warming.

He seemed as if he ___ his homework when his mother came in