He’s got himself into a dangerous situation______he is likely to lose control over the plane.

____ printed, this science fiction will be popular among the students.

We must get up early tomorrow，______ we’ll miss the first bus to the Great Wall．

I have received an offer from a German university, but I’m still hesitating ______ I should accept it.

―When will the visa be ready, sir?
―______ everything goes well, you will get it in 14 workdays.

_______ we got to the station, the train had left already.

He is very old, ______ he still works very hard.

The day       I have been looking forward to will certainly come．