make questions for the underlined parts: 1,I am class 7A .................................................................? 2, we can understand this test ..................................................................? 3,a hat is six thousand VNDs ..................................................................? 4,we go out every Monday .....................................................................? 5,Jack collects stamps .................................................................? 6,we are learning to play the guitar ..................................................................? 7,they have three children .......................................................................? 8,he does business to earn money ........................................................................? 9,they are 170 cm tall ..............................................................? 10,the woman has to wear uniform ...............................................................?