ening when it was swarm, I stayed awake___________ until half past eleven in order to have a good look at the moon bymyself.

I was the edge of the canyon. A river was the bottom of the canyon.

It is said that Nanjing Metro Line 3 ________ at the end of 2014.—That’s great! It will be much easier for more people to go out.

Look at the ______, sir. The white shirt is larger than the yellow one.

It is hoped that these discoveries can ________ the origins of the universe.[ ]