二、选词填空。
根据语篇内容，从方框中选择恰当的连词填空。每个单词只能用一次。
if because and though while
Different people have different ideas about exercise. Some people enjoy doing exercise 1. it is interesting and keeps them healthy. However, others think exercise is boring. 2. they know exercise is important for their bodies, they still don't spend much time doing it. So how can we make exercise more fun?
In fact, many of your favourite activities can be entertaining（有趣的）forms of exercise! 3. you like to dance, just play your favourite music and dance for 30 minutes. Dancing is a great way to move all your muscles（肌肉）. Or maybe you love being close to nature. If so, ask a reliable（可靠的）adult to hike with you. You'll be moving your body 4. enjoying fresh air and the beauty of nature.
Try some activities that mix fun with exercise, 5. you can make exercise full of fun and surprises. Next time, instead of using the word "exercise", just call it "fun on the move".

1. because 2. Though 3. If 4. while 5. and

请根据以下英语提示，猜出相应的运动项目，并用英语将答案填写在横线上。
1. Two or four players hit a ball over a net with rackets（球拍）. They play on a big court. They take turns and try to make the other side miss the ball.

2. People called jockeys（骑师）ride horses. The horses run fast. The first horse to finish the race wins.

3. Players use long sticks called clubs（球杆）to hit a small ball. They try to get the ball into holes in the ground with as few hits as possible.

4. Two people wear big gloves. They fight in a square ring（方形拳台）. They hit each other to win the game.

1. tennis 2. horse racing 3. golf 4. boxing