`1.` Covid-19 prevented us from going to school.
Giải thích: prevent sb from doing sth: ngăn cản ai đó làm điều gì
`2.` The last time I went to the cinema was 2 years ago.
Giải thích: The last time S V-ed was [time] ago = S have/has not Vpp for [time]
@ `Ly`