1:A teacher has a pile of sheets. If each student is to be given 4 sheets, 29 sheets are remaining. If each student is to be given 7 sheets, 16 sheets are needed more. How many students are there? 2. In the sequence 5, 7, 12, 19, 31, 50, 81, ..., each term starting from the third one is the sum of the preceding two. How many odd numbers among the first 2020 terms? A 1347 B 1345 C 1346 D:483. 3 Sabrina went up 5 floors to her friends house to collect a cake. She went down 8 floors to pass the cake to her cousin. She then went up another 2 floors to look for a friend who stayed on the 10th floor to do homework together. On that floor was Sabrina staying? A 11th B 8th C 4th D 6th Chi can ghi dap an nhe