Thank you for giving us some useful advice _______ how to deal _______ the problems.
The boy is ______ my sister, so he sits in front of her.
You must be very tired. Why not ________ a rest?
I don’t know who ________ the boy stand here. How poor he looks.
—Mum, who called me this afternoon when I was out? —A girl calling ______ Lucy.
— _________ will the foreign students be back from Nanjing? — In two days, I think.