______ they may not succeed, they will try their best.
A. Though B. When C. If
---______ do you eat fast food?
---Twice a week.
A. How long B. How soon C. How often
---John, your birthday is coming. Let's book a cake.
---Oh, great. I can't wait ______ it now.
A. enjoy B. enjoying C. to enjoy
Quanzhou is a city with many places of interest. _______ tourists came here every year.
A. Thousand of B. Thousand C. Thousands of
Nowadays _______ of business letters ______ in English.
A two third, writes B. two thirds, is written C. two thirds, are written