Combine the following sentences using too, so and both... and... 1. These sophisticated sewing machines are expensive. Those sophisticated sewing machines are e

1. These sophisticated sewing machines are expensive, and those are too.
These sophisticated sewing machines are expensive, and so are those.
Both these and those sophisticated sewing machines are expensive.

2. John has done his homework, and so has Mary.
John has done his homework, and Mary has too.
Both John and Mary have done their homework.

1. These sophisticated sewing machines are expensive too .

2. Both John and Mary has done her homework.