You know, the weather is not very good. Is there any possibility        the flight would be put off?

________ she couldn't understand was ________ fewer and fewer students showed interest in her lessons.

________ it is so hot, I guess we can’t do anything until after dark.

I’ll just call Steven to remind him _____ we are meeting at eight.

.Modern agriculture has greatly developed and nowadays animals are usually raised in _____        we call factory farms. As a result of this, lots of labour is saved.