题目内容
David can be really difficult _______even though he’s a nice person in general.
A. at times B. in time C. at one time D. at all times
A
考查词组辨析。at times (=sometimes/ from time to time )“有时,不时”;in time “及时;最终;迟早”;at one time “曾经,一度”;at all times“随时;总是”。
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