_The work is easy for an expert _______it is difficult for an inexperienced person.
#80051
A
because
B
therefore
C
while
D
unless
推荐题目
In case of fire, stay low to the ground in a smoky room, ________ smoke always rises towards the ceiling.
#30873
A
as
B
when
C
while
D
once
Last night, before the exam, I went over the lessons I couldn’t keep my eyes open to stay awake any longer.
#30575
A
before
B
until
C
unless
D
when
---How long has your brother been working in this factory? ---_____he dropped from school in 2010.
#30727
A
When
B
Until
C
Since
D
Before
—Henry, the phone is ringing. Do you want me to go? —No ,sit still. .
#80537
A
I’ll get it
B
I am to get it
C
I’m getting it
D
I am about to get it
This is the concert hall ________ he has given very successful performances.
#34127
A
where
B
which
C
that
D
when