He walked up and down the room for half an hour, _______ behind him.
We _____ a pleasant journey but for the rain.
— Shall I go and buy two more bottles of beer? — No, I’ve already bought twenty. That _____ be enough for us two.
_____ China’s reform and opening up in late 1978, its quick development has aroused worldwide attention, which has made America anxious about it.
We Chinese can work wonders, that is, we can make ____.
Mr Smith, ______of the _______speech, started to read a novel.