We’ve a lot of things to do. But we must get some sleep.A. at firstB. at onceC. first of

发布时间：2020-08-14 23:57:13

We’ve a lot of things to do. But      we must get some sleep.
A. at first
B. at once
C. first of all
D. the first thing

网友回答

A. at first
B. at once
(答案→)C. first of all
D. the first thing
解析：first of all= first 首先； at first= in the beginning最初。
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