---What should I do for the health of my teeth, doctor?--- Well, it’s best to ______ your teeth before you go to bed.
I have a basketball, ______ I don’t have a volleyball.
I play ______basketball every day.
This is ______interesting book.
This is _______pen.. _______ pen is nice
My father likes(喜欢) soccer. He thinks(认为) it is ________.