Answer: whether, weather
Explanation: Looking at the Grey sky, Becky wondered WHETHER the WEATHER would ruin the class trip.
Weather and whether although having a similar pronunciation do not perform same function in a sentence.
Weather is used to describe the temperature and precipitation activity at a certain point in time while WHETHER is a word used as a condition between two likely outcomes.
Answer:
You have to have a determination or willingness with the things you do if you want to achieve something great. For example, if you wanted to be successful with an invention. In order to achieve this, you would have to have the eagerness to work.
the bark on the tree is smooth.
Answer:
As long as the picture isn't copyrighted.