________ we will have a trip to Tianjin depends on ________ he will have a holiday during the Labour Day.
When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.
If you find yourself ______ no one will help you, please call me.
It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
At no time _______ the rules of the game. It was unfair to punish them.
The place he suggested to us ______ the meeting is a five-star hotel.