【单选题】
It is ____ to fly an airplane at three thousand miles an hour.
【单选题】
A note has three essential components the addressee, the sender and [].
【判断题】
Three-colored glazed pottery is a specialty of Suzhou
【单选题】
Hes worked here___three years.
【判断题】
He has been in china for three years.
【单选题】
Not until three years ago _____ to work outside.
【单选题】
Computer____________ more and more extensively in the world today.
【单选题】
The game was fixed for today but it has been____ for a week.
【单选题】
Wuthering Heights is known today as __________most fascinating novel.
【判断题】
A: How are you today? B: Im all right.