He never said that he was good at mathematics, ?
There __________ a small quantity of water left in the bottle and there are __________ apples in the basket.
You can not use the machine today because some parts __________ this week.
Many of us love traveling, but lack of financial __________ often holds us back from seeing the world.
__________ the website of the Fire Department in your city, and you will learn a lot about firefighting.
This is one of the experiments __________ in our laboratory.