I went to the Window of the World in Shenzhen. It’s ____ great ______to see a lot of beautiful views in one day.
It will take me two weeks ________ the work.
—How often does your brother go swimming? —________.
I can’t learn math well. Can you give me some ________?
They are going to have a picnic _______ next week.
There are about ________ students in our school.