Prepositions on, at, in, by - Other Uses

Fill in the following table as shown in the examples. Put in on, at or in where necessary. ANSWERS
by plane in the shade
foot car
capital letters a speed of 160 km an hour
train a diet
pencil the phone
the age of 18 cheque
the train his car
credit card a temperature of 100°C
ink strike
post cash
fire the sun