Scientists found many stones ________ with numbers on the mountains.
#103097
A
marking
B
marked
C
being marked
D
have been marked
推荐题目
Mother wanted to be a good provider, a role she ________ since her marriage to Father.
#99061
A
shoulders
B
shouldered
C
is shouldering
D
has been shouldering
Clare finally decided to leave the company she ____ for since she graduated from university.
#102046
A
would work
B
has worked
C
was working
D
had worked
――With so much work____, don’t expect any holiday!――We will have to finish it soon.
#101406
A
doing
B
done
C
being done
D
to do
The phone had been ringing for three minutes before it .
#104247
A
answered
B
had answered
C
was answering
D
was answered
—This returned Chinese scholar has become one of the top experts in this field.—Yes , I know him very well. He ___________ in Africa with wild animals for eight years.
#104287
A
has worked
B
had worked
C
worked
D
has been working