Heasked_______ any elephants in the zoo the day before.
AIDS and SARS may have made the headlines, but rabies (狂犬病) is now _____ killer than both.
How can I make sure my feet ______, Doctor Li?
What! ________ to go there with _______? No!
The international agreement, ______ to encourage children not to smoke and help people kick the habit, was signed on February 27.
― Why ______ you stay in the countryside, where it’s not convenient to go shopping?―But I’ve found it rather valuable for my health.