--I saw Betty go to Grandpa Li's home just now. --Yes. She’s often seen _________ the old man with the housework.. A: help B. to help C. helps D. helped
The health official said ______ 12 suspected cases of influenza A (H1N1) were tested negative and ______, so far, this city has reported no case of the virus.
—What do you think of Harry Potter and the Philosopher’s Stone?
—Fantastic. Steven Kloves ______ each character in the movie impressive through lively dialogues and fascinating plots.