Choose the best answer

Choose the best answer
1.---May I open _______ bag, sir?
---Of course, but it's full of _______ dirty clothes.
A.the,/ B.the,the C./,/ D.a,/
2._______ family often eat _______ supper together.
A./,/ B.The,the C.The,/ D.A,a
3.________ girl at ________ checkout was too busy to answer my question.
A.The,the B.A,the C.The,a D.A,a
4.---Hello,is Betty there?
---I'm sorry, you've got _______ wrong number.
A.a B.the C./ D.some
5.Sam sold _______ pictures every day, and all ________ pictures in his shop were cheap.
A./,the B./,/ C.the,/ D.the,the
6.--- What's ________ postage for ________ parcel, sir?
--- I'll weigh it first.
A.a,the B.a,a C.the,the D.the,a
7. ________ dictionary is ________ useful book.
A.A,a B.The,a C./,/ D.A,the
8.He collects Chinese paintings for ________ hobbies, but not for _________ money.
A./,/ B.the,the C.the,/ D./,the
9.You can't keep this book for more than two weeks. This is _______ only copy in our library.
A.the B./ C.an D.a
10.--- Don't make any noise, ________ children. Your father is at ________ work.
A./,the B./,/ C.the,/ D.the,the