5 . There are thousand of books in the new public library .

=> How many books are there in the new public library ?

6 . Hoa played tennis with her friends last weekend .

=> Who did Hoa play tennis last weekend ?

7 . It is only five hundred meters from Viet's house to the arcade

=> How far is it from Viet's house to the arcade?

8 . They were in the laibrary last night

=> Where were they last night?

9 . .The new electronic game costs two hundred thousand dong

=> How much does the new electronic game cost ?