You can also use raspberries instead of the strawberries and raspberry gelatin instead of the strawberry. Here is the full recipe:
Strawberry Poke Cake
1 box white cake mix
(Water, vegetable oil and egg whites called for on cake mix box)
1 small box strawberry-flavored gelatin
1 cup boiling water
1/2 cup cold water
1 container frozen whipped topping, thawed
Heat oven to 350°F. Make and cool cake as directed on box for 13x9-inch pan. Pierce cooled cake all over with fork. In small bowl, stir gelatin and boiling water until smooth; stir in cold water. Pour over cake. Run knife around sides of pan to loosen cake. Refrigerate at least 2 hours (or overnight). Frost with whipped topping; garnish with strawberries and blueberries. Store covered in refrigerator.
Hope you enjoy your holiday! May we rejoice in our freedom!