ecause of the terrible health ,he had to give up his work.
she must be over 20.
our school dance team is made up of twenty members.
that pare of shoes can,t be my sister,s,because she doesn,t like red.
this book might be my father,s or my mother,s.
这题好像都是九年级的啊,我也在九年级,祝共同提高