If you try to do many things______, you’ll become tired out.
He is good at swimming.
park is very close, so you can walk there.
—Is he Li Ping?—Yes, ____.A. I’m B. he’s C. he is
“One one zero” 表示 ____。A. 火警 B. 匪警 C. 急救中心
Mary ____ from Cuba.A. is B. am C. are