No matter where he is, he makes _________ a rule to go for a walk before breakfast.

May I go swimming this afternoon — I’m afraid not _______ you have finished your homework.

Lily，you are so special thatyou’re different from other girls. —Everyone in theworld is different. So，just _______ yourself! It’s the best way of life.

It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off.

you been to the Great Wall– Perhaps not in my memory. _______, it might havebeen during my early childhood.