求现在完成时的动词形式和常见的时间状语

培养ll树2 1年前 已收到1个回答 举报

zcl80 幼苗

共回答了17个问题采纳率:100% 举报

do---have done
be---have been
in several minutes(seconds/hours)
at times
once/twice/three times a week
sooner or later
after 3 years
right now
just now
as soon as possible
at once

1年前

3
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