11 employees does the United States' Library of Congress have?
12 are there in your library?
13 does your English class start on Wednesday
14 Does the school cafeteria open
15 will be the best for me
16 does she work hard
17 can we find many English dictionaries
18 you play marble
19 do they get together and talk about....
20 does Mr Tuan work in the field with
