用所给词的适当形式填空（虚拟语气）
【小题1】We ____________（be）back in the hotel now if you hadn't lost the map.
【小题2】__________ he not ___________（hesitate）for a moment before kicking the ball，he would have scored a goal.
【小题3】If you __________( inform）me of your birthday，I would have bought a birthday cake for you.
【小题4】__________（be）there no modern telecommunications，we would have to wait for weeks to get news from around the world.
【小题5】They were abroad during the months when we were carrying out the research，or they __________（participate）in the project.