The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.
#68141
A
which
B
that
C
as
D
what
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It was the skills that he had acquired at his training period enabled him to get such a high post in that world-famous company.
#70097
A
when
B
that
C
who
D
which
I’m glad to hear a new school building has been put up ______ once lay an abandoned cinema.
#67912
A
where
B
when
C
why
D
that
Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
#67875
A
being used
B
used
C
to be used
D
having been used
_______, his idea was accepted by all the people at the meeting.
#67557
A
Strange as it might sound
B
Strange although it might sound
C
As it might sound strange
D
As strange it might sound