将下列句子变为被动语态,每空一词。
1.We can finish the work in two days.
The work____ _____ _____in two days.
2They produce silk in Suzhou.
Silk____ ____in Suzhou.
3The children will sing an English song.
An English song—— —— ——by the children。
4Lucy sent me a New Year Card last week.
A New Year Card ___ ___ ____me by her last week.
5He made me do that for him。
I____ _____ _____ _____that for him.