易错题Although we don't know what was discussed, we can feel the topic ________．
A.has changed B.was changed C.has been changed D.changed
We always use the Internet, but we don't know when it ________．
A.invented B.was invented C.will invent D.will be invented
The students of Class One ________ how to do the experiment in class yesterday.
A.taught B.were taught C.will teach D.will be taught
No matter how many difficulties we meet, I believe all the problems________ in the end.
A.can solve B.can be solved C.need solve D.need be solved
Nowadays, highspeed trains, mobile pay, shared bicycles and online shopping ________ the New Four Great Inventions in China.
A.call B.were called C.called D.are called
With the development of China, Chinese ________ by a large number of people in the world.
A.speaks B.is spoken C.spoke D.was spoken
