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

Is Mr. Williams interested in placing an order for the new varieties?

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.

People can add emphasis to a sentence by placing ___________ in front of the adjective.

We should sign a sales contract before placing an order. ( )

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.

A compound can be formed by placing any lexical item in front of another.( )