Put in: once/twice/ 3,4,5 times a week/a day/a month/ a year.
1) He goes to London...
2) We wash the floors...
3) We went to the British Museum ...last spring.
4) They had Handicaft...last year.
5) I have porridge for breakfast...

1) He goes to London twice a year.

2) We wash the floors once a week.

3) We went to the British Museum once a month last spring.

4) They had Handicraft three times a week last year.

5) I have porridge for breakfast four times a week.