Every few years, the coal workers                 their lungs X-rayed to ensure their health.
#102390
A
are having
B
have
C
have had
D
had had
推荐题目
It’s reported that by the end of this week the stock exchange________ by about 10%. 
#102564
A
will have risen
B
has risen
C
will be rising
D
has been rising
Please tell me _____ tomorrow morning.
#104563
A
what are you doing
B
what you are doing
C
what you will be doing
D
what will you be doing