(2011·湖南)One-third of the country ________ covered with trees and the majority of the citizens ________ black people.
#99565
A
is;are
B
is;is
C
are;are
D
are;is
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The surface of the table ______ smooth enough.   
#102806
A
hash’t felt
B
isn’t feeling
C
doesn’t feel
D
isn’t felt
----Where can we get your latest children’s story?----Soon. It _______ and will come out next week.
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A
has printed
B
is being printed
C
has been printed
D
has been printing
The construction of the two new railway lines   by now.
#99633
A
have been completed
B
has been completed
C
has coompleted
D
have completed