问题补充:
The boy was sitting his mother, his back the door.
A. next to…with…to
B. nearly…of…against
C. close to…with…on
D. near…in…towards
答案:
(答案→)A. next to…with…to
B. nearly…of…against
C. close to…with…on
D. near…in…towards
解析: with his back to the door是with的复合结构,意为“背向着门”。