________the foreign friends here is over 400. And ________them come from the USA.A.The number of; the number ofB. A number of ; a numberC. The number of ; a number ofD. A number of ; the number of
I ________ walk ________ after school. I ride a bike every day.
He, ______ his father, ___________ ball games.
These boys are _____ football players. They all play football _____.
Miss Wu teaches ________ Maths. She is nice ________ everyone.
The housework is ______ easy. You don't have to spend (花费) _______ time on it.