问题

33. Yan’an used to be a revolutionary _____for the Red Army.
A:base A
B:basis
C:foundation
D:Ground
B:basis
C:foundation
D:Ground
正确答案是:
同类题型
John opened the door. There ________ he had never seen before.[ ]
The poor children ______ worry about ________ money to go to school.
finally got up to leave,we both knew that a real friendship ________ between us
I have decided to go on holiday ________
Could you ___ us ___some information about all kindsof vacations