Question

—It's hot. Would you like some icecream?
—I'd like some, but I'm ________.

A．in a diet

B．on a diet

C．on diet

D．in diet

Answer 1

B

试题分析：句意：上文，真热啊。你想吃些冰激凌吗？下文，我想吃一些，但是我正在节食。Be on a diet是固定用法，意思是节食，选B。