—Why do you look worried?—Fred left the company half an hour ago. His work ________ unfinished since.
#104729
A
left
B
was left
C
has left
D
has been left
推荐题目
This year the price of rice _____ about twenty percent. 
#101072
A
was raised
B
has been risen for
C
has risen by
D
has raised to
---Can I help you, sir? ---Yes. I bought this radio here yesterday, but it _____. 
#104442
A
didn't work
B
wouldn't work
C
can't work
D
doesn't work
Does everyone know what to do if a fire ______?
#102754
A
is broken up
B
breaks up
C
is broken out
D
breaks out