I had just finished my test paper ___ the bell rang, announcing the exam was over.

While we are very interested in Realcine,we will still need much more information we can make a decision to use it.

People in the West celebrate Christmas _______ each other presents.

The documentary A Bite of China II《舌尖上的中国》is quite popular around China recently.—What do you think of

his pocket English dictionary cost me2 US _____, that is more than 16 RMB _____.