( )你指着自己的照片对同学说: A. This is my sister. B. This is me. C. I’m Sam.
—You look sad. What’s the matter? —_________.A. It’s a key. B. I can’t find my key. C. How does it feel?
This packet of sweets _______very nice.A. is B. are C. don’t
What’s that in the river? __________.A. That’s a duck. B. There’s a duck. C. It’s a duck.
Look at __________ moon in the sky. A. a B. an C. the
The house’s shadow _____________ not short. A. is B. are C. am