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1. There is_____ traffic jam along the expressway.
A. a
B. an
C. the
2. Mother left _____________ house without her keys.
A. a
B. an
C. the
3. Mother prepares_____________ sandwiches and_____________ milk for our breakfast.
A. a/ X
B. the/ a (câu này mik thấy hơi sai sai)
4 ._____________ author is someone who writes books.
A. A
B. An
C. The
5. I have_____________ uncle who teaches at Chu Van An Primary School.
A. a
B. the
C. an
6. There are many___ fish.
A. a
B. an
C. X
7.Nam has_____________orange. He wants to share with his younger brother.
A. a
B. the
C. an
8. Do you swim in___ sea every day in_ summer?
A. a/ the
B. the/ X
C. the/ the
9. My father is_____________farmer. He works hard in_____________ field.
A.a/ the
B. a/ a
C. the/ the
10. John lives in _____________city with his mother, father and sister. He doesn’t like
____ noise. He wishes to move to _____________ countryside to
enjoy fresh air.
A. a/ the/ a
B. the/ the/ the
C.. the/ X/ the
7. She is good ___________ speaking English. *
A. for
B. on
C. in
D. at
8. Can you give me __________ information about the show? *
A. a
B. an
C. some
D. any
\(1ab1=87\times ab\)
\(\Rightarrow1001+10\times ab=87\times ab\)
\(\Rightarrow87\times ab-10\times ab=1001\)
\(\Rightarrow ab\times\left(87-10\right)=1001\)
\(\Rightarrow ab\times77=1001\)
\(\Rightarrow ab=1001:77\)
\(\Rightarrow ab=13\)