It has now become clear how extraordinarily fecund a _______ was the 1890s.
A. September
B. December
C. decade
D. octopus
The sum of all the angles of a _________ is 180 degrees.
A. triangle
B. sexangle
C. enneagon
D. pantagon
I ____________ in Hawaii for ten years.
A. has been living
B. have been lived
C. has be lived
D. have been living
Since that unfortunate accident last week, I _______________ at all well.
A. haven’t been sleeping
B. have been sleeping
C. haven’tsleeping
D. have sleeping
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