While ________ the dog, you should take care not to ________. Otherwise, it may be dangerous to strangers.
#80445
A
walking; get loose
B
walk; be loose
C
walking for; get it loose
D
training; get it run
推荐题目
——Did you know any French before you arrived in Washington?——Never ____ it, actually.
#84092
A
had I learned
B
have I learned
C
I learned
D
was I learning
_________ I will visit Brazil during the 2016 Olympic Games. 
#80158
A
If I am possible
B
If it possible
C
If I possible
D
If possible
Hurry up, boys. Only at this rate _____ able to afford a holiday.
#81091
A
we may be
B
may we be
C
we can be
D
can we be
He dressed up and went to the party as if_____.   
#81771
A
was invited
B
had been invited
C
to be invited
D
invited