— Excuse me, may I use your bicycle? ______ is broken.— Certainly. But remember to return it before lunch.
A:I
B:Me
C:Myself
D:Mine
4辆小卡车和5辆大卡车一次共可运货27吨,6辆小卡车和10辆大卡车一次共可运货51吨,则小卡车和大卡车每辆车每次可以各运货( )吨。