Ôn thi Cấp tốc 789+ vào 10 môn Tiếng Anh (Đề 12)

For example, in Singapore people can be forced to pay a large fine just for (20) _______ rubbish.

20/30

For example, in Singapore people can be forced to pay a large fine just for (20) _______ rubbish.

to drop

dropped

dropping

drop