—What would you do if it _______ tomorrow?—We have to carry it on, since we’ve got everything ready.
— I didn't tell my parents the secret yesterday. — But you ______.
In 1911, Madame Curie received a second Nobel Prize for her research, the first person in the world ______ two Nobel Prizes.
A 16-year-old male student had been infected with bird flu in Hunan province , the fourth case of human bird flu found in China.
In the face of____ failure, it is most important to keep up _____ good state of mind.
一 What a fine day! Shall we go picnicking? 一_____ .But we need to be home before six o’clock for the football match.