一、用括号中所给单词的正确形式填空。
1. Would you like some (potato) for lunch?
2. The small dog can walk on two legs; that is so (interested)!
3. There are some (sheep) in my grandfather's farm.
4. Jack is (play) and he often plays with his friends.
5. Lily is new here and it's her (one) day at the school.

1. potatoes
2. interesting
3. sheep
4. playing
5. first

二、阅读短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有一项为多余选项。
Spring is here. The sky is bright blue and the air is nice. You can see happy faces and hear people laughing on the street. 1.
First of all, in spring we can enjoy more daylight hours than in winter. Sunlight helps produce serotonin（产生血清素）in our bodies. 2. Even if we just stand outside, we are often happier.
Besides, the weather is warmer, so we are more active（积极的）. 3. Even when we are indoors, we often open the windows and doors to allow the fresh air to come in. Fresh air makes our minds clear.
4. They can be good for us. According to a study, flowers can make sick people feel better. And many birds also make people feel happy.
Good times pass quickly. Let's enjoy this beautiful season.

1. C 【解析】根据下文讲述原因,此处应提问为什么春天让人开心。
2. A 【解析】根据前句阳光有助于人体产生血清素,可知它能让我们更快乐。
3. E 【解析】根据前句天气更暖和,我们更积极,可知好天气鼓励我们多出门,和后文开窗通风呼应。
4. D 【解析】根据后句提到花和鸟,可知此处讲春天的花和鸟。