成句係 : they constantly check their phones and pay little attention to their environment, let alone what’s in front of them...
問題係 what is “ what’s in front of them “
A. Their meal
B. Their money
C. The environment
D. Their phone
都幾肯定係meal 黎 let alone 係一個layer黎 類似 更莫講話blah blah blah 嘅意思 就算唔睇文 只係講成篇嘢message 都可以答到答案係meal 唔會係phone