What _____ I doing ?A . is B. do C. am
That’s a horse . It a tiger . A. not B. isn’t C. are
This cow is big . A. a B. an C. /
—Is that interesting story ? —Yes , it is . A. the B. a C. an
We call it a pen English . A. to B. at C. in
A is a calf’s mother . A. horse B. cow C. cat