With a letter to my mother ( ) Mother’s Day, I’m going to take a minute to reflect. A: on the occasion B: on the occasion of C: on occasions D: in the occasion of

着装的TOP原则为（）。 A: time，occasion，place B: time，occasion，plan C: time，occasion，people D: time，opportunity，place

Now and then; from time to time. A: enormous B: work on C: occasion D: on occasion E: in retrospect

By dressing-down for an occasion, you express your respect not only for the occasion, but also for the other guests, the surroundings and especially the host or hostess.

Is an invasion likely to be an occasion when

TPO rules stand for dressing according to ______.? Time, place;and occasion;|Time, place and order;|Time, position and occasion;;|none of the three.

On occasion, it can be ___________ the national interests of the host country.

Which of the following is an example of a speech for a special occasion?

Which of the following is not the common occasion for a speech of toast? ______

He is used to flying by air and on no occasion _______frightened.