Why do you look so happy，Mike—Because I got ________ invitation from my friend for a birthday party.

The old man sitting under the tree smiled dreamily, as if _____something pleasant in the past.

The lawyer required the ____ ofevidence so that he could defend the accused.

ing to the regulation of Education Ministry, a full-time middle school or primary school _______ hold a flag-raising ceremony once a week, except during vacations.

Don’t handle the vase as if it ________madeof steel.