is widely acknowledged that there is life, there is hope.
There was such a long queue for coffee at the interval that we_________gave up.
_____________half an hour earlier, you would have met the famous writer.
A great number of students ______ said they were forced to practise the piano.
At no time________the first to use the nuclear weapon.
__________ to sun, rain and wind for a long time, the stone split(裂开).