把下列句子转换成同义句,每空一词.
1.Is your sister interested in keeping pets?
______ your sister ______ _______ _______ ________　　keeping pets?
2.Science is as diffcult as art.
______ science __________ art are difficult.
3.They can speak French.I can speak French,too.
They can speak French.______ ________ I.
4.He is very strong.He can move the machine.
He is strong _______ ________ move the machine.