4. Choose and fill 选择适当的单词填空（1）The man_________(who/what) you saw yesterday is a doctor from Beijing.（2）Here is a book_________(who/that) will give you a lot of useful information.（3）Everything_________( that/which) I told you just now is true.（4）The girl_________(who/which) sang well at the party last night is my friend.（5）The mobile phone_________(that/who) is made in China is mine.