For some time the expert __________ people of the health risks caused by passive smoking. He     says he won’t stop until all the smokers around him decide to quit smoking. 
#102620
A
is warned
B
is warning
C
has been warning
D
has been warned
推荐题目
Miss. Gao _______ in the library for three years. But now she is a teacher.
#102018
A
worked
B
has worked
C
had worked
D
has been working
When he woke up,he found himself _________in bed and ________by some  children.
#101697
A
laying;surrounded
B
laid;surrounding
C
lying;surrounded
D
lied;surrounded
------I thought I asked you to fix the radio.------Oh, I’m sorry. I_______it right away.
#104910
A
would do
B
was about to do
C
will do
D
am going to do