单项选择题
A.has returned B.have returned C.has return D.have return
I（）major damage to navigational instruments.A.hasB.hadC...
单项选择题I（）major damage to navigational instruments.
A.has B.had C.have D.have to
You are running（）danger.Fog bank ahead of you.A.toB.atC...
单项选择题You are running（）danger.Fog bank ahead of you.
A.to B.at C.in D.into
We（）let go port anchor.A.are going toB.is going toC.wer...
单项选择题We（）let go port anchor.
A.are going to B.is going to C.were going to D.was going to
