今年春节晚会后,一首《时间去哪儿了》的歌曲“火”了起来,观众评价这首歌内容让人亲切、使人感动。这说明( )
Both rice and wheat ____ grown in that country.
They both have some friends; but his ____ more active.
The following ____ some other examples.
My family ____ small.
Mathematics ____ the language of science.