Whether in a professional or social setting it's always ________ if you fail to introduce two people when you're their only shared acquaintance.
A. superior B. awkward
C. mysterious D. current
Looking you straight in the eye does not mean the person is telling the truth. Experienced liars often do this in a(n) ________ way，playing on people believing the myth.
A. automatic B. compulsory
C. sensitive D. deliberate
I believe we could face delays if we travel by bus，________ traffic jams.
A. thanks to B. despite
C. regardless of D. in spite of
I don't believe you can do today's job with yesterday's methods and be in tomorrow's business，________？
A. do I B. don't I
C. can you D. can't you
I made ________ acquaintance of his sister at the party and then I fell in ________ love with her.
A. an；a B. the；a
C. the；/ D. an；a
The old couple have been married for 40 years and never once ________.
A. they had quarreled B. they have quarreled
C. have they quarreled D. had they quarreled
