------ __ does your father go to see your grandmother ?------Once a month .A.How long. B. How soon C. How often.
I like junk food so much because ______ really delicious.
If you have a headache, you must take some ______.
---______ do you exercise? ---Once a week.
________ is Chinese; ________ name is Han Mei.
Nike and David ________ English.