---____ do you study for a math test? ---I study math ____ lots of exercises.
The firemen in Tianjin explosion scene devoted their lives ____ the spread of pollution.
As a doctor, you________.
Listen carefully, ______ you will miss what the teacher says. Studying hard makes _______ possible to achieve success.
A miss is ________ a mile.
The high-speed railway will ______ Sunshine Town _____ Moonlight Town.