Both of you claim you are right.In fact,either you or he ________ wrong.
Water,which seems so simple and common,is________makes life possible.
________wants to stay in a hotel has to pay their own way.
---I’m going to take part in the mid-term examination next week. ---_________!
The woman was about to open the door ____________ she heard a strange sound from inside.
We can see light in his office. He___________ be in his office.