You’d better finish your homework now, I won’t let you out.A. and B. or C. so
Is this your pen? Please call me _____ 0833-8817171.
This is ____ interesting book, please ___ it _____ here.
Let’s ________ now.
---What’s this______ English? ---______ a ruler.
There ________ a book and two clocks on the desk.