It’s very convenient ______ us to buy train tickets now because we can buy them either from the station or on the Internet.
There’re a lot of _____. It’s _______.
When is the best time ______ China?
Five million, five hundred and fifty-two thousand, three hundred and thirteen is _________.
About _____ of the students in Grade Eight this year were born in the ______.
While mother ____ some washing, I ___ a kite for Kate.