—I saw you come to school by bus this morning.—Oh, I _______ come to school by bus, but it is raining today.

Billy: I’ve been fixing the computer for over three hours, but it still doesn’t work. Nana: Why don’t you take a rest and try 　　　?  Maybe you’ll do better then.

— Have you ________ watched the dolphin show in the Ocean Park in Hong Kong?—Not _________.

It’s raining cats and dogs now. The students are running or riding home. The words “cats and dogs” means______.

       of them the south of China . They live       on rice .