makes,
一般and有 连接两个两个句子,把这个句子拆开看,就是 My mother is very stict.My mother makes me very tired,从反面来理解就是把这两个句子变成一个句子---一个简单句（一个主语一个或是多个谓语动词没事的） My mother is very stict and makes me very tired.
要是变成复合句（应该是所谓的复杂句吧!） 就是 My mother is very stict,she makes my very tired.(用连接词把两个句子连接成为一个复合的句子)