【正文】
gested3. (2019年全國卷Ⅰ)Of the nineteen recognized polar bear subpopulations, three are declining, six ________ (be) stable, one is increasing, and nine lack enough data.解析:此處陳述客觀事實,應(yīng)用一般現(xiàn)在時;six指代“six polar bear subpopulations”,謂語動詞應(yīng)用復(fù)數(shù)。而句子主語nobody是第三人稱單數(shù),所以當(dāng)句子為一般現(xiàn)在時態(tài)時,謂語動詞用第三人稱單數(shù)。fast food意為“快餐”,表示一類食物,為不可數(shù)名詞,謂語動詞用單數(shù)形式,故填is。主語school是單數(shù)名詞,故填es。round forms of exercise.解析:當(dāng)主語后面接along with引起的短語時,謂語動詞應(yīng)和主語(cycling)保持一致,再由Nowadays可知,用一般現(xiàn)在時,故填is。答案:is9. (2015年湖南卷)It is important to remember that success ________ (be) a sum of small efforts made each day and often ________ (take) years to achieve.解析:句意:重要的是要記住,成功是每天做出的小努力的積累而且花很多年才能達(dá)到。答案:is