I think the room is too small for us .A. to liveB. living inC. to live inD. live in

问题补充：

I think the room is too small for us .

A. to live

B. living in

C. to live in

D. live in

答案：

A. to live

B. living in

(答案→)C. to live in

D. live in

解析：句意：我认为这个房间太小了不适合我们居住。too…to…意为“太…而不能…”，为一固定句型，live为不及物动词，介词in不能省略；故选C。