President Obama made a speech for half an hour without      his notes.
#68711
A
bringing back
B
looking up
C
trying on
D
referring to
推荐题目
Although I often send e-mails to Tom, I have never seen him _____________. 
#71576
A
face to face
B
in time
C
at the moment
D
hand in hand
The room wants ___.
#81210
A
to clean
B
cleaning
C
cleaned
D
being cleaned