It’s popular to use QQ to _________ with each other on the Internet now.
Don’t put off today’s work for tomorrow. I mean, today’s work ______ today.
It is said that the Jin Mao Building in Shanghai is 420.5 meters ________.
—Shh! ________! The film has begun.—Oh, I’m sorry.
I think the Grand Canyon is unusual natural wonder of the world.
—Our country _____ progress in science and culture in recent years.