There are _______ seasons in a year. A. two B. there C. four
He can ____ Chinese. A. say B. tell C. speak
I ___ a robot. A. has B. have C. having
____ are hard-working. A. They B. Is C. Am
____ they helpful at home? A. Am B. Is C. Are
Chen Jie ____ polite. A. am B. is C. are