---Where are you, Tom? ---Here in the sitting room, ___to Professor Smith.
#97175
A
to write
B
writing
C
is writing
D
to be writing
推荐题目
In my opinion，life in the twenty－first century is much easier than ________.
#89176
A
that used to be
B
it is used to
C
it was used to
D
it used to be
During the flood many students volunteered ________ through the weekend, giving out food and water for the victims.
#88784
A
working
B
to work
C
to have worked
D
having worked
______ in 1955, Disneyland in California in regarded by any as the original fun park．
#96415
A
Opened
B
Having opened
C
Opening
D
Being opened
Entering the room, I found Mary ______at the desk and ______a letter.
#94374
A
Seated；wrote
B
Sitting；written
C
Seating；writing
D
Seated；writing
_____ in Paris, the Louvre is one of the world’s largest art galleries.
#94647
A
Locating
B
Located
C
Having been located
D
Being located