. Welcome Teachers to our English lesson ! Class 5E1 Teacher: Cao THi Giang Tuesday, Octorber 05 th 2 010 UNIT 1: Let’s Learn some more Are these cats ? Yes,. are. Are these cats ? No, They aren’t. 1. Grammar Are those frogs ? Yes, They are. Are those frogs ? No, They aren’t. 1. Grammar Those are cats Are these...