After the new high﹣speed railway line began operations，the time on the trip from Lianyungang to Qingdao now is much less than____in the past．（ ）
A．oneB．thisC．thatD．it
During the epidemic（疫情） many______in our city went to Hubei Province as volunteers．（ ）
A．woman doctorB．woman doctors
C．women doctors
We should protect the environment _______ we can make a better world to live in．（ ）
A．so thatB．even though
C．as soon as
I will be in senior high school ______ a month． I can't believe the time went by so fast．（ ）
A．atB．inC．on
Zhong Nanshan is not only_______excellent doctor but also a brave fighter．（ ）
A．aB．anC．the
﹣There will be a graduation ceremony next week． Do you know____________？
﹣We will have it on line instead of at the school hall．（ ）
A．when it will be held
B．when it was held
C．where it will be held
D．where it was held