( ) My mother works _____ a bank . A. in B. on C. at
You must ______ a life jacket by ferry.A. wear B. to wear C. wears
You must drive _____ by sled.A. slowly B. slow C. run
Some ___ go to school by ferry in Papa Westray.A. children B. childs C. kid
You can go to school by _____. It snows a lot.A. sled B. ferry C. plane
I must ______ the traffic lights.A. look after B. pay attention to C. look for