They ___a new house at the foot of the hill last year.
A. Build
B. built
C. builds
D. was building
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Sorry, you can’t take the typewriter away, I ____it.
A. use
B. used
C. have used
D. am using
President Obam_____China in May.
A. visits
B. is to visit
C. is visiting
D. visited
It ____true that sun rises from the east.
A. be
B. been
C. is
D. was