I.用适当的相互代词和指示代词完成下列句子.
1.I have never seen _______ a big tree.
2.______ is a notebook and _______'s a dictionary.
3.______ mobile phone is on my desk?Don't forget to take it away.
II.选择.
1.Please find out ______ he is looking after at home.
A.who B.which C.whom D.when
2.He told me ____ he was sent for.
A.whom B.that C.both D.where