My grandmother came ........................ train.
Show Hint
When talking about a mode of transport in general, use the preposition 'by' (e.g., I travel by bus). If you are referring to a specific vehicle, you might use 'in' (for cars/taxis) or 'on' (for buses, trains, planes).
Step 1: Identify the function of the blank in the sentence. It needs to specify the method of travel.
Step 2: Recall the rule for modes of transport. The preposition 'by' is used to indicate the means or mode of transportation, such as by train, by car, by plane, or by boat.
Step 3: Apply the rule. The correct sentence is "My grandmother came by train."