--- __________ is the cost of the trip to Nanjing ? --- About forty yuan per person. A. How B What C. How many D. How much
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.