I find writing ___ than speaking.

This kind of plant is ______  to the changes of the temperature. So you should keep it from freezing.  

We’re expecting Jerry because he’s our _________ visitor who comes here for holiday every summer.

--- The report is difficult to write. --- You can surf the internet, where you can find _____ information and useful expressions.

 _________several times, but Mary still has no idea of how to do it properly.