The children aren't at home.They______(go)to thepark填什么还有l两题Air is _____(colour).We can't see it.The new airport was in use in1998.(改为同义句)The new airport______ ______ ______ _______ ______ 1998.再来个分析

问题描述:

The children aren't at home.They______(go)to thepark
填什么
还有l两题
Air is _____(colour).We can't see it.
The new airport was in use in1998.(改为同义句)
The new airport______ ______ ______ _______ ______ 1998.
再来个分析

went
colourless
was put into use in
祝你学习愉快! (*^__^*)
请及时采纳,多谢!

1 went
2 colourless
3 was in service in

have gone

have gone to
colourless
has been in use since

have gone
colourless
was put into use since