In the dark street, there wasn’t a single person _____ she could turn for help.
#71918
A
to whom
B
who
C
from whom
D
that
推荐题目
The experiment shows that proper amounts of exercise, if _____ regularly, can improve our health.
#67898
A
being carried out
B
carrying out
C
carried out
D
to carry out
While having our dinner, _______. 
#68160
A
the door bell rang
B
our newspapers came to the door
C
we heard the door bell ringing
D
the postman brought several letters to us