【题目】You have become fatter than before; I think you should lose weight.
You have ; I think you'd better lose weight.

【答案】ut；o；weight
【解析】根据上句：你比以前变胖了，我认为你应该减肥。由此可知下句的答案为put on weight”增加体重“。这是现在完成时，故填put on weight。