How many 询问数量 — 英语选择题
题目
There are 3 boxes. The first box has 4 pencils and 2 rulers. The second box has 3 pencils and 5 rulers. The third box has 2 pencils and 1 ruler. How many pencils are there? A. 7 pencils B. 8 pencils C. 9 pencils D. 10 pencils