Chọn đáp án đúng

----- Nội dung dịch tự động từ ảnh -----
Câu 17: If the computer doesn't work, try _____ it off and on again.
to switch
switching
switch
having switched
Câu 18: The suspect _____ being near the bank at the time of the crime.
claimed
accused
denied
refused
Câu 19: The man is believed ___. over a thousand marathons since he started.
ооо
to run
to be running
he has run
to have run