The growing use of computers _____(be) causing enormous changes in work.
Watching TV and playing computer games ______(be) one of the most important children's leisure activities.
How we can cope with these problems ______(be) an interesting issue.
There have many students on the playground.
People traveled by bike or on foot decreased significantly.
改错：Intelligent students should not treat differently by their teachers. （two words）
改错： There are a number of people choose to spend holidays overseas.
改错：There have a significant increase in film from 21% in 2018 to 55% in 2022.（one word only）
请选出现在完成时的基本形态
have done
had done
be done
has done
改错：There is a wallet lie on the ground. （one word only）
改错：There are many young people do not know how to manage money effectively.
The growing use of computers _____（be） causing enormous changes in work.
Watching TV and playing computer games ______(be) one of the most important children's leisure activities.