将下列句子改为被动语态：（1）my mother made this skirt last month.
问题描述：
将下列句子改为被动语态：（1）my mother made this skirt last month.
(2)we sent many books to the Hope School last week .
(3)they plant trees on the hill every year.
(4)we use thecomputer to send e-mails.
(5)when did you buy your mobile phone?
答
1 This skirt was made by my mother last month.2 Many books are sent to the Hope School by us last week.3 Trees are planted on the hill by them every year.4 The computer is used to send e-mails by us.5...