we have done a lot to build a low-carbon economy,yet it is still _________ ideal. We have to work even harder.

When I came back from my 10-day holiday, I found the fish tank was broken and the fish______

The man with a black hat was seen _____ the shopping mall just now.

Mandeep can go to school now.UNICEF has paid for her ______.

Some experts hold the view that knowledge is noweverything for people . They think people’s moral character is ______as_____they have learned .