A：didn't worry about; do
B：didn't worry about; was
C：wasn't worried about; did
D：wasn't worried about; was
废金属主要指____、____、____的金属物品等。
2016年“世界地球日”活动主题为“节约集约利用资源，倡导绿色简约生活”，下列说法不符合主题要求的是（ ）
You must leave now ________ you can meet your mother at the airport on time.
