Ask your baby "Where's your mouth?" this week and chances are he'll touch his own. Most 11 month olds can respond to simple questions by pointing at an object you've just named. Your baby can also follow simple instructions. Tell him you want a kiss and he may just give you one. Many can babble in short sentences that almost sound like proper language, too. Keep talking to your baby, naming and labelling things and people. The more you do, the faster his vocabulary will grow.