Why didn’t you answer my phone call, Jack?—I’m sorry, but I ________ then.

What do you think of _______teacher? –She’s very kind. She can teach ______English well.

I’ll show you a market ________ you may buy all ________ you need.

Please find more limericks _____ the Internet and learn them _____ heart. [ ]

Do you think necessary to do a bird count ?Yes , we must count them at least once a year