Jawaban: D
11. My sister have studied English at campus
A. English was studied by my sister at campus
B. English have been studied by my sister at campus
C. English is studied by my sister at campus
D. English has been studied by my sister at campus
Jawaban: D
12. I have been teaching my students for 15 minutes
A. My students has been being taught by me for 15 minutes
B. My students is being taught by me for 15 minutes