"Mary, turn off the water_________you are brushing your teeth. " "Sorry, I'll do it at once. "A. until B. while C. during
We always ___________ with our family on Chinese New Year because a big party is on TV.
This sweater is too big. Do you have a ___________ one?
—Today(今天)is Alan’s birthday. —Oh, Really? ____________, Alan!
___________ October 1st, we have an art festival.
Look! ___________ are under the sofa.