According to the research reports, people usually ………….. in their sleep 25 to 30 times each night.

According to the research reports, people usually ………….. in their sleep 25 to 30 times each night.

A. turn

B. are turning

C. have turned

D. turned
Xem đáp án
A là đáp án đúng
Lời giải:
“usually” diễn tả thói quen của ai đó