We should prevent such a silly mistake _____ again.
| A．occurring | B．to occur |
| C．to be occurred | D．from being occurred |
，it’s true.
| A．Strange as it may seem | B．As it may seem strange |
| C．Seem strange as it may | D．It as may seem strange |
，I would go.
| A．I had the time | B．The time I had | C．Had I the time | D．Did I have the time |
I believe that when the power of love overcomes the love of power，will there be peace in this world.
| A．until then | B．only which | C．so | D．only then |
all scientists from Asia.
| A．Were present at the meeting | B．Present at the meeting were |
| C．Are present at the meeting | D．Present were at the meeting |
―David has made great progress recently.
―，and.
| A．So he has;so you have | B．So he has;so have you |
| C．So has he;so have you | D．So has he;so you have |