当别人对你说"Happy birthday!"时,你应该说:A. Happy birthday. B. Thank you.
---Is this computer ______________? ---No, it’s not _____________. It’s my _____________.
Here’s a letter ___________ Kate. She’s ill __________ home.
It’s time ______________.
---____________ is your shirt? ---It’s black and white.
There __________ some books and a clock on the desk. The clock ________three hands.