My English-Chinese dictionary has disappeared. Who_____ have taken it ?
Not until I began to work ____ how much time I had wasted.
It was_______ that they went for a drive in the countryside.
Simon made a big bamboo box the little sick bird till it could fly.
Nowadays it is difficult for people to find ________ work everywhere because ________ economic situation is very serious.
—I have some big news for you. You’ve been accepted as a member of our club.—_______ That’s great!