Let’s ________ the blackboard. A. be B. clean C. to clean
Lu Jialei , 14, from Hangzhou Foreign Language School , won first place in the CCTV Chinese Character Spelling Contest (汉字听写大会).
He was surprised ________ his best friend again.
He was just falling asleep________ there was a loud knock at the door.
Mary was dancing while Mike ________ the piano.
The old man looked for the dog________