Mr. Smith ________ his pupils how to prepare for the test since 8 am, but no one listens to him.
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A
has told 
B
is telling
C
has been telling 
D
will have told
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----- Where was I ? ------ You _________you didn’t like your father’s job.
#103414
A
had said
B
said
C
were saying
D
had been saying
To our relief, Xiaodan as well as the other children who ______ no parents ______ good care of in the welfare institute.
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A
have; is being taken
B
has; are being taken
C
has; is being taken
D
have; are being taken
Experiments of this kind   in both the U.S.and Europe well before the Second World War.
#102432
A
have conducted
B
have been conducted
C
had conducted
D
had been conducted