Mary clapped her hand over her mouth _______ she realized what she had said.
—I seldom watch TV, but listen to the radio a lot. — __________.
We’ve made it a rule that ___________ comes home first cooks supper for the whole family.
To their great joy, the day they looked forward to__________at last.
. It is not I but you who__________the first to run to the goal in that competition.
_______is known to all ,the Diaoyu Islands have been part of Chinese territory since ancient times.