At what age should a child be able to speak in sentences?
There is no set time for when a child will speak in full sentences. Every child is different and with you having twins it could take a little longer than normal because they understand eachother and dont feel the pressure that a single child does to start speaking. Just like if you have a child that is a year or two older than another, the younger one wont talk as quickly becase the older one understands them and will talk for them. I really wouldnt worry, it sounds like they are right on track. If you are real concerned then talk with your pediatrician about it.