The policeman's attention was suddenly caught by a small box which ______ placed under the Minister's car.
#104010
A
has been
B
was being
C
had been
D
would be
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If Newton lived today, he would be surprised by what _______ in science and technology.
#103519
A
had discovered
B
had been discovered
C
has discovered
D
has been discovered
---- I’ll be able to come to see your performance at 8:30 tomorrow evening.---I’m sorry, by then my performance____ and I___ reporters in the meeting room.
#104969
A
will be ended; will meet
B
is to end; will meet
C
will have ended; will be meeting
D
will be ended; am going to meet
Experiments of this kind ___in both the U.S and Europe well before the Second World War.
#100251
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted