看图,在正确答案前打√。 1. Is she a teacher? ( ) A. Yes, she is. ( ) B. No, she isn’t. 2. Is this a duck? ( ) A. Yes, it is. ( ) B. No, it isn’t. 3. Is this a sheep? ( ) A. Yes, it is. ( ) B. No, it isn’t. 4. Can a dog jump? ( ) A. Yes, it can. ( ) B. No, it can’t.