____ several times, the young scientist still kept on doing his experiments.
A．Having failed B．Having been failed C．Failed D．To fail
It was last October ____ they finally came back to their hometown.
A．when B．that C．what D．until
My pen is missing I can’t find ____ anywhere.
A．one B．this C．that D．it
Had I learnt English well, I ____ interview for the job tomorrow.
A．would take B．would have taken
C．must take D．could be taken
I think the answer is right but I’m not ____ sure about it.
A．exactly B．absolutely
C．particularly D．eventually
Having walked in the desert for several days, we felt exhausted, but we had to find a pool before water in the bottle ____.
A．ran out of B．ran away C．ran out D．ran off
