The question is _____easy, so everyone in our class can answer it.

-We need an immediate reply. –I see . I’ll send the paper to you_____.

When talking about the Mid-autumn Festival, we ______ think of mooncakes and family reunion.

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. 

If we leave right away,____ we’ll arrive on time.