__Waiter,what about my food?I________for over 30minutes.__Oh,sorry,sir.Just one more minute,please.[ ]

Do you know where my I think I saw it this morning.

31．Every solid object______reflect a sound，varying according to the sizeand nature of the object．

_______your mother good at cooking—Yes, but my father _____cook well.

known to all, Montreal is the second largest French-speaking city in the world, _______.