Thomas Alfa Edison, devoting himself to lighting and...
Clarymond Simbolon
6 bulan yang lalu
Thomas Alfa Edison, devoting himself to lighting and bulb, ... a thousand times by the time he succeeded with his invention.
A.
had tested almost
B.
will have tested almost
C.
has been testing almost
D.
will be testing almost
Jawaban: A
Pembahasan:
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Bahasa Inggris
TOEFL
Past Perfect Tense