I______to meet the scientist for ages since I have heard so much about him.
A. am longing
B. have longed
C. have been longing
D. will long
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He is extremely foolish______he does not seize the golden opportunity to continue his studies,
A. if
B. as long as
C. even though
D. now that
The directors have a meeting every Friday______there is nothing to discuss.
A. as
B. if
C. unless
D. in case
______the singer finished her song, the audience burst into applause.
As soon as
B. Since
C. Until
D. Provided
______many people came to the meeting that there were not enough seats for everyone.
As
B. If
C. When
D. So