28. ---Would you like to have some ice-cream?
---I’d like to, but I'm on a diet ______ weight.
A
lose
B
B. to lose
C
C. being lost
D
D. Lost
根据题意,节食的目的是减肥,此处应填目的状语to lose,故选B。
本题是语法知识题。本句意思是:我想吃冰激凌,但是我在节食为了减肥。此处选B.
把握不准非谓语的形式。