Luyện tập Part 6

1.

deduct
remote
remark
signify

2.

covering
covered
coverage
cover

3.

over
when
always
between

4.

During
After
Upon
While

5.

basis
sense
cause
influence

6.

to publish
will be published
is publishing
have been published

7.

environment
circumstances
efficiency
requirements

8.

unstable
unknown
uncertain
unsafe

9.

subsequent
sustaining
suspended
subjective

10.

works
has been working
worked
has been worked

11.

from
at
for
to

12.

remainder
remembrance
reminder
remain

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