-Jim, can you work this Sunday? -? I've been working for two weeks on end.
______ he met with the difficulty did he realize the importance of our help.
—Is there a fog in the evening ? —There _____ be . I’ll make a phone call to find it out .
I am afraid I am not fit for the job, because it is one__________ requires a lot of patience.
—I don’t think you should use the dictionary while reading newspapers. —_____, but I can’t do without it.
We agreed to accept__________ they thought was the best professor in the college .