Question

【題目】We have a lot of things to do. But________ we must get some sleep.

A. at once B. at first C. first of all D. the first thing

Answer 1

【答案】C

【解析】

句意：我們有很多事情要做。但首先我們必須睡一覺。A. at once立刻，馬上；B. at first起初；C. first of all首先；D. the first thing第一件事，通常用作主語。first of all= first 首先；at first= in the beginning最初。此處是副詞詞組用作狀語，故答案為C。