It seems very unlikely to happen, but if it( ), we need to be well-prepared.
A.正确答案Ashould
B.could
C.must
D.might
It seems very unlikely to happen, but if it( ), we need to be well-prepared.
It seems very unlikely to happen, but if it( ), we need to be well-prepared.
A.正确答案Ashould
B.could
C.must
D.might