11) I wish I took part in the party.
12) My father used to be a handsome boy when he was young.
13) Peter started playing the guitar two years ago.
14) I haven't met him for three months.
15) She is used to getting up early in the morning.
16) I have never visited Ho Chi Minh’s Mausoleum before.
17) He spends one hour doing his homework every day.
18) Saving the water is necessary.
19) My friend was at school yesterday.
20) When did you begin learning English?
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Chúc bạn học tốt !