About seventy percent of the earth         with water.
#44524
A
is covering
B
is covered
C
are covering
D
are covered
推荐题目
The sick boy ____________ to hospital by the police yesterday.
#44521
A
is taken
B
was taken
C
takes
D
took
 Dad, my computer is broken. Must it _____ now?
#44599
A
is repaired
B
has been repaired
C
be repaired
D
has repaired
It is true that knowledge_____ rather than being taught. 
#44980
A
learns
B
learned
C
is learned
D
was learned
Each time tourists travel to Beijing, they_______ the Forbidden City.
#44966
A
will be shown up
B
will be shown around
C
will show around
D
will show to