So far we have done a lot to build a low-carbon economy, but it is ____ ideal (理想). We have to work still harder.
Human beings are different from animals they can use language as a tool to communicate.
—I’m going to the stadium ,but I’m afraid I’m not in the right . —.Go ahead.
—I thought you were proud of the work I. —I’m afraid not .You’d better change it for another.
They happen to be of age ,and they all go in for American football.
I have no idea how it that the man met with trouble again.