Listen! Do you hear someone      for help?
#95491
A
calling
B
call
C
to call
D
called
推荐题目
Our school was going to send a teacher to Xinjiang . I was the first person _______ to go.
#89744
A
volunteer
B
to volunteer
C
volunteered
D
volunteering
It rained nonstop for ten days , completely       our holiday.
#97820
A
to ruin
B
ruined
C
having ruined
D
ruining
______ by a greater demand for vegetables,farmers have built more green houses.
#97882
A
Driven
B
Being driven
C
To drive
D
Having driven
Has the boy who was made use of _______ realized the mistake?
#95830
A
stealing
B
stolen
C
to steal
D
for stealing