一、用所给单词的适当形式填空。
1. —(have) three meals a day is important.
—Yes. But sometimes I (not feel) hungry in the morning.
2. —What’s the (weigh) of those (strawberry)?
—It’s 2 kilos.
3. —Do you have good (eat) habits?
—Yes, I like to eat all (kind) of vegetables.
4. —It is difficult for me to focus on (learn) in class.
—You should (get) enough sleep at night.
5. —What about (drink) some soft drinks?
—I like them, but my mom (say) that they are bad for (I).

1. Having; don't feel
2. weight; strawberries
3. eating; kinds
4. learning; get
5. drinking; says; me

1. 第一空：动词作句子主语时需使用动名词形式，句首单词首字母需大写，因此have变为Having；第二空，sometimes是一般现在时的标志，主语为I，否定形式借助助动词don't后接动词原形feel，即don't feel。
2. 第一空：固定结构the + 名词 + of 表示“……的……”，动词weigh对应的名词形式是weight，意为“重量”；第二空，指示代词those后接可数名词复数，strawberry的复数形式为strawberries。
3. 第一空：固定表达eating habits意为“饮食习惯”，用动名词eating作定语修饰名词habits；第二空，固定短语all kinds of意为“各种各样的”，kind需变为复数形式kinds。
4. 第一空：固定搭配focus on doing sth. 表示“专注于做某事”，介词on后接动名词，因此learn变为learning；第二空，情态动词should后必须接动词原形，因此填get。
5. 第一空：提建议的固定句型What about doing sth. 中，介词about后接动名词，drink变为drinking；第二空，主语my mom是第三人称单数，句子为一般现在时，谓语动词say要变为第三人称单数形式says；第三空，介词for后接人称代词的宾格作宾语，I的宾格是me。