一、根据句意和所给汉语释义写出单词
1. There are eight __________ (行星) in our solar system.
2. This coach can carry 45 __________ (乘客) at most at a time.
3. The factory dumped a lot of waste into the river and made the river __________ (被污染的).
4. Never __________ (比较) your life with others’. Every dog has its day.
5. Some actions must be taken to control the __________ (增加) in pollution.

二、根据句意，用括号中所给单词的适当形式填空
1. The low-sugar cakes are __________ (special) made for the elderly.
2. More and more people rushed into the hall and it became very __________ (crowd).
3. At present, our __________ (spacecraft) are too slow to carry large numbers of passengers to Mars.
4. The long journey on bus may be __________ (comfort), but you can enjoy the nice views along the road.
5. My father is tired and he needs time __________ (relax).