Barrack Obama __________ President of the United States since 2010.
#63757
A
became a
B
has become a
C
has turned
D
has been
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Mary has __________ herself __________ for the party.
#63748
A
held; up
B
attended; to
C
done; up
D
turned; up
—Look! Someone ________ the floor.—Well, it wasn't me. I went shopping just now.
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A
had swept
B
has swept
C
was sweeping
D
is sweeping
The final examination is coming up soon. It’s time for us to ________ our studies.
#63788
A
get down to
B
get out
C
get back for
D
get over
The house is dirty because it ________ since they moved out.
#63759
A
doesn't clean
B
isn't cleaned
C
hasn't cleaned
D
hasn't been cleaned