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Giải dùm em với ạ, em cần giải thích nữa ạ

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II. Súpply îne correct tense oI the verDs in parentneses to compiete the sentences.
1. Mr. Tuan has taught Math in this school since he
(graduate) from the
university in 2000.
2. I
(not see) Tommy since we left school.
3. I
(not buy) the book yet. Can you lend me yours?
4. The phone
(ring). - I
(answer) it.
5. Why (you /not join)
them? - I was so busy that I couldn't come.
6. Hurry up! The bus
(come)
7. What (you/do)
when the accident happened?
EP21
170%-
2 of 2
Words: 476
English (U.S.)
:16 | ysv-sgzb-tca
J.