____ he works hard, I don’t mind when he finishes the experiment.
A．As soon as B．Even though C．So long as D．So far as
____, he does not know the answer.
A．As he is a teacher B．As he is teacher
C．A teacher as he is D．Teacher as he is
We were ____ to go out for a camp ____ it began to rain.
A．hardly; than B．around; as C．about; when D．nearly; while
____ 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
