It is believed that a new kind of drug ______ by the scientists and they are hopeful that they will succeed in a few months. 
#102623
A
has been developed
B
is being developed
C
is developing
D
has developed
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--- I will come to your lecture at 10:00 am. tomorrow. --- I’m sorry. By then my lecture ______ and I ______ my guests in my office.
#103415
A
will end; am being met
B
have ended; will meet
C
will have ended; will be meeting
D
will have ended; will have met
Qing Dynasty ______for more than 200 years.
#100238
A
existed
B
has existed
C
was existed
D
has been existed
After the soup ,everyone felt it .
#102544
A
tasted;tasted well
B
was tasted;tasted well
C
tasted,tasted good
D
was tasted;tasted good