The owner of the hotel is a qualified chef, but he rarely cooks himself nowadays. However, _______________ he helps the head chef in the kitchen if the restaurant is busy.
on occasions
I do have a few suggestions that should improve your presentation, but __________ I think it was an excellent speech.
on the whole
We went _________ to Paris for a day on the train and saw the Eiffel Tower and Notre Dame Cathedral
on a trip