Stop! You can never touch this machine when it ________, it is very dangerous.
#102729
A
has been operated
B
will be operated
C
is operated
D
is being operated
推荐题目
The people _____ the murderer everywhere when he suddenly _______ in the hospital.
#102316
A
searched for; appeared
B
were searching; was appearing
C
were searching for; was appeared
D
were searching for; appeared
—I’m trying to find yesterday’s newspaper．Have you seen it?—I’m afraid that I ______ it away．I thought you had finished reading it．
#102393
A
threw
B
had thrown
C
throw
D
will throw
If nothing______, the oceans will turn into fish deserts.
#99587
A
does
B
had been done
C
will do
D
is done
I first met Lisa three years ago. She _____ at a shop at the time.
#104141
A
has worked
B
was working
C
had been worked
D
had worked
—I’m sorry, I shouldn’t have been so rude to you.—You something not very nice to me, but that’s OK.
#102858
A
have said
B
had said
C
were saying
D
did say