A家不仅是一间房子.有了房子还有爱才是家,第二句应为Add love to a house and you will get a home.祈使句,“做了——就能——”B和C都把前半句看成从句,但是那样的话缺动词,因为you will get a home.是一个完整的句子,主谓宾神马也不缺,不能把动词贡献出来和前面共用.BCD这样改就对了：
B.To add love to a house is to get a home.(最好前后一致都用to)
C.Adding love to a house is to get a home./Adding love to a house creates a home.
D.Added love to a house (is what) creates a home.把Added love to a house 整个作为主语