_________they arrived early at the airport,they never missed the flight.A.if B.becauseA.if B.because C.as soon as D.althoughwhy should it choose D.but not
问题描述：
_________they arrived early at the airport,they never missed the flight.A.if B.because
A.if B.because C.as soon as D.although
why should it choose D.but not
答