将下面句子变为被动语态，每空一词。
We’ll put on an English play in our school．
An English play ________ ________ ________ on in our school．
Did they build a bridge here a year ago?
________ a bridge ________ here by them a year ago?
I have given this book to the library．
This book ________ ________ ________ to the library．
He made me do that for him．
I ________ ________ ________ ________ that for him．
People use metal for making machines．
Metal ________ ________ for making machines．
Lucy sent me a New Year Card last week．
A New Year Card ________ ________ ________ me by her last week．
You needn’t do it now．
It ________ ________ ________ by you now．
The children will sing an English song．
An English song ________ ________ ________ by the children．
They produce silk in Suzhou．
Silk ________ ________ in Suzhou．
We can finish the work in two days．
The work ________ ________ ________ in two days．