A. get
B. receive
C. obtain
D. acquire
第1题:
A.believes
B. is believing
C.is believed
D. believed
第2题:
51_______.
A.understand
B.explain
C.believe
D.question
第3题:
第4题:
A. many - to - one
B. one - to - one
C. one - to - many
D. many - to - many
第5题:
第6题: