might be expected, the answer to the question was very mixed.
A．As B．That C．It D．What
If their oxygen , the two British men a chance of surviving.
A．ran out, had B．didn’t run out, would have
C．had run out, didn’t have D．hadn’t run out, would have had
By the middle of the 1920s the farthest corners of the earth explored.
A．are B．were C．have been D．had been
Under no circumstances my bike tomorrow.
A．he is borrowing B．is he to borrow
C．he will borrow D．could he be borrowing
Mr. Green stood up in defence of the girl, saying that she was not the one .
A．blamed B．blaming C．to blame D．to be blamed
is to struggle.
A．Living B．Live C．To live D．To be lived
