The Johnsons are planning to go to Australia __________ holiday, but they haven’t decided which city to go to _________ their holiday.
I_______ my homework when the door bell__________.
What are you busy doing, Sandy? —— I’m making some flash cards _________ me remember English words.
Have you bought_________ for Linda’s birthday? ----Not exactly.Just some flowers.
—Mr. Black, may I leave now? —Well, if your work ________, you can go home.
____can we get to the airport? The plane to Guangzhou takes off at 3:00 p.m. —Don’t worry. We will be there in ten minutes.