----Do you know how the accident _______?----Sorry, I don’t know.A. come outB. come into beingC. come about
--Are there ___________ birds in the tree? --Yes, there are __________.
The school day ______ at half past seven every morning.
There are two _______students in my school.
Kate is on my right and Lucy is on my left. I’m_____Kate and Lucy.
How many ________ are there in the park?