There was a big dog ______ in front of Mr. Hill’s house, so David didn’t dare to go near it.
#91653
A
to sit
B
sat
C
sitting
D
sits
推荐题目
____ regular training in nursing,she could hardly cope with the work at first.
#95321
A
Not having received
B
Since receiving
C
Having not received
D
Not received
We usually take turns ______cleaning ,and today it is my turn ____it 
#97241
A
to do; doing
B
doing; doing
C
doing ;to do
D
to do ;to do
 Tony was very unhappy for _______ to the party.
#98433
A
having not been invited
B
not having invited
C
having not invited
D
not having been invited