This robot is supposed to save a lot of labor, but it remains a problem if it ______.
#37091
A
is
B
saves
C
does
D
has
推荐题目
I was doing my homework while my parents __________ TV last night.
#42075
A
watched
B
were watching
C
have watched
D
are watching
—Did you meet the professor at the airport?—No，he ____ by the time I ____ there．
#42354
A
had left；got
B
has left；reached
C
was leaving；got
D
left；had got
—Who is the baby in this photo?—It’s my sister’s son. The photo _____ by her by e-mail ten days ago.
#39468
A
sends
B
is sent
C
sent
D
was sent
________ plenty of fun things to do if you choose the travel path.
#37633
A
There are going to have
B
There is going to be
C
There will be
D
There will have
What did Mr．Smith do before he came to China?—He in a car factory．
#42117
A
worked
B
works
C
is working
D
will work