问题补充：
Don’t be late again. Please try your best to be here .
A. in time
B. on time
C. at times
D. at all times
答案：
A. in time
(答案→)B. on time
C. at times
D. at all times
解析：句意：不要再迟到了。请尽最大努力准时到这儿。in time及时；on time准时； at times有时；at all times总是，一直。所以选B。
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