______ where to go, he asked a passer-by for help.
#93632
A
Having lost his way and didn’t know 
B
Losing his way and didn’t know
C
Having lost his way and not knowing 
D
Lost his way and didn’t know
推荐题目
.At this moment the bell rang _______ the end of class. 
#97431
A
announce 
B
announcing 
C
announced 
D
to announce
We don’t allow ___in the office. But you are allowed ____in the rest room. 
#89766
A
smoking, smoking
B
to smoke, to smoke
C
smoking, to smoke
D
smoke, smoking
______ their service, the workers of the hotel are active in learning English.
#91829
A
Improving
B
To improve
C
Improve
D
Having improved