题目内容
（请给出正确答案）
A.connection
B.association
C.terms
D.relations
答案
D、relations
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更多“It is essential to be on frien…”相关的问题
A.must be sent
B.would be sent
C.be sent
D.were sent
B、comforts students
C、comforts teachers
It is essential that you______ on time.
A．arrive
B．will arrive
C．need to arrive
D．must arrive
Establishment of a ______ insurance system is essential for economic reforms.
A．accurate
B．sound
C．undisturbed
D．safe
What step is essential to the traditional production of flu vaccine？
[A] Manufacturers implant the vaccine into ordered chicken eggs.
[B] Scientists identify the exact strain soon after a flu pandemic starts.
[C] Public health measures are taken as an important pandemic-fighting tool.
[D] Viruses are deadened and made clean before being put into vaccine use.
It is essential that these application forms ______ back as early as possible.
A．must be sent
B．will be sent
C．are sent
D．be sent
In order to (attain) our objective, it is (essential) that we (will make) the best use of the limited resources (available).
A．attain
B．essential
C．will make
D．available
It is essential that all the reports tq be published__________twice．
A.be checked
B.would be checked
C.were checked
D.will be checked
From the passage, we can infer that "popular" words are ______.
A. essential to daily life
B. not regular in usage
C. convenient to use
D. not*standard enough to be used
