I’m good running.A.on B.at C.in
挑出不同类的一项。A.ruler B. it C. I
挑出不同类的一项。A.bed B. fish C. card
So many .A.card B. a card C. cards
What’s my hand?A.in B. on C. at
—Is it a horse?—No, it .A.is B. isn’t C. is no