Global trade _____ significantly by digital technologies in recent years.
transformed
has transformed
has been transformed
was transforming
Bitcoin, _____ value fluctuates wildly, _____ by many investors.
whose / is avoided
which / avoids
that / is avoiding
who / has avoided
_____ carbon emissions have decreased, global temperatures continue to rise.
Because
Unless
Whereas
Although
The curriculum _____ before the new semester began.
revised
had revised
had been revised
was revising
Zero Conditional: If students _____ regular feedback, they _____ faster.
receive / improve
received / improved
will receive / improve
had received / would improve
Teachers _____ incorporate technology _____ more engaged students.
which / have
who / have
who / had
whose / has
Second Conditional + Relative Pronoun: If governments _____ companies _____ pollute rivers, there _____ fewer water shortages.
fined / that / would be
fine / who / would be
had fined / which / will be
will fine / whose / were
Non-defining Relative Clause + Conjunction: Solar power, _____ is now cheaper than coal, _____ many countries still rely on fossil fuels.
that / so
whose / because
where / although
which / but
The economic policies _____ in this country _____ criticized by international experts.
implemented / have been
implementing / were
to implement / are
implements / had been
By 2040, AI _____ many jobs, _____ new opportunities will emerge.
replaces / but
will replace / so
will have replaced / although
has replaced / because
The Amazon rainforest, _____ is vital for oxygen production, _____ at an alarming rate.
that / is shrinking
which / is shrinking
who / shrinks
where / has shrunk
Third Conditional: If renewable energy _____ earlier, tons of CO2 emissions _____.
was adopted / would save
had been adopted / would have been saved
adopted / had saved
has been adopted / will save
Remote work has become popular _____ it reduces commuting time and costs.
whereas
despite
nevertheless
since
_____ governments invest in renewable energy, carbon neutrality will remain impossible.
Unless
Whereas
Until
Moreover
Online learning offers flexibility, _____ traditional classrooms provide more interaction.
because
so
whereas
as a result
The university _____ library was renovated saw increased student satisfaction.
The lab _____ the experiment was conducted has strict safety rules.
明智的; 可取的 (adj)
Vocab: The government's new policies aim to _____ economic inequality by redistributing wealth.
mitigate
congregate
fluctuate
illuminate
Vocab: The government's new education policy has _____ criticism from teachers' unions, who argue it undermines public schools.
provoked
evolved
sustained
deferred