It is said in the book that Thomas Edison (1847—1931) ________ the world-leading inventor for sixty years.
#104751
A
would be
B
has been
C
had been
D
was
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The battle lasted for a few hours and at last the enemy ________.
#103830
A
was defeated
B
were beat
C
were won
D
defeated
Great changes in every field _____ in the last ten years.
#99202
A
take place
B
took place
C
have taken placed
D
had taken place
—No one answered when I phoned this morning. Where were you?—I for teeth in the dental clinic.
#102191
A
was being treated
B
have been treated
C
was treated
D
Treated
David _____ a customer when the fire started．
#101355
A
served
B
was serving
C
had served
D
would serve
Our food supply _____. We’d better get some in case there’s ____ left.
#101949
A
is running out, none
B
has run out of, none
C
is using up, nothing
D
has used up, nothing