You’d better some hot water into the teapot in case the tea cools down. A. addB. fillC. f

问题补充：

You’d better some hot water into the teapot in case the tea cools down.

A. add

B. fill

C. fill in

D. put

答案：

A. add

B. fill

C. fill in

D. put

解析：句意：你最好往茶壶里倒些热水，以免茶变凉。add …to…把……加到……里去；fill…in…把……填入……；put… into…把……放到……里面。