China is embarrassed by such a fact: Chinese visitors______ rubbish on the Great Wall, followed by a foreigner picking up the litter.
#100231
A
will drop
B
would drop
C
are dropping
D
had dropped
推荐题目
The new bridge ________ by the end of last month.
#101340
A
has been designed
B
had been designed
C
was designed
D
would be designed
 Mary ______ to see you . She _____ for you downstairs at the moment . 
#104620
A
has come ; is waiting
B
came ; is waiting
C
has come ; waited
D
came ; was waiting
 The room _______ very useful when we had visitors.
#101127
A
was proved
B
has been proved
C
has proved
D
proved