Xinjiang is one of the areas sandstorms happen most often, results from a dry climate, vast desert and a strong wind.
Then professor walked onto the platform and seated himself in a chair, ________ for answering questions.
The headmaster has promised us that we shall be told ________ the results of the exam come out.
You can't go out since you haven't finished your homework; ________, it is a stormy night.
The victims suffering from the terrible earthquake have to be provided accommodations if they ________.
I have read the material several times but it doesn’t make any ______ to me.