The collision bulkhead shall be of ______.
A.water-tight
B.air-tight
C.fire-tight
D.oil-tight
What()I do()I miss the train.A.shall，becauseB.shall，ifC.can，becauseD.shall，although
点击查看答案
勾结（Collision）
What()we do if the company cut down on ads?A、 couldB、 willC、 shall
Shall ______ give you a cup of coffee?A、IB、youC、theyD、it
Shall ______ turn left at the crossing?A、IB、youC、theyD、us
You () to lock the door at night.A、shouldB、oughtC、mustD、shall
It ________ to rain soon.A. isB. is goingC. willD. shall
