[ Grammar ]
I ______ (study) English ______ four years.
A. I have studied English since four years.
B. I have studied English for four years.
C. I has studied English since four years.
D. I has studied English for four years.

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Vocabulary › ViewAn event causing great and often sudden damage or suffering; a disaster
A. Catastrophe
B. Flustered
C. Incumbent
D. Promptly
Transition Words › View
His presidency was brought down by scandal. ______________ he was a pretty good bowler.
A. On occasion,
B. For example,
C. On the bright side,
D. Then,
