Using number in one sheet to draw content from another sheet

I've tried using the search facility for this but it doesn't seem to be playing ball today.

I have a column of numbers in one sheet and in the second sheet there are two columns, column a is the corresponding number from the first sheet and column b is the wording for that number. See example below.
What formula could I use to draw the data from one to sheet to another to make the words replace the numbers in the column of the other sheet?

Sheet
102
107
119
145

Sheet 1
Column A Column B
102 Apples
107 Oranges
119 Pears
145 Grapes

Many thanks
Mike