Question 25: The discovery was a major _____________for research workers.
A. breakthrough
B. break-in
C. breakdown
D. breakout
Question 26: I accidentally _______________Mike when I was crossing a street downtown yesterday.
A. lost touch with
B. kept an eye on
C. paid attention to
D. caught sight of
A. breakthrough
B. break-in
C. breakdown
D. breakout
Question 26: I accidentally _______________Mike when I was crossing a street downtown yesterday.
A. lost touch with
B. kept an eye on
C. paid attention to
D. caught sight of