题目内容：
When you perform aerobic activities you 9 contract large muscle groups such as your legs and arms.
参考答案：
答案解析：
填空题：When you perform aerobic activities you 9 contract large mus
- 题目分类：英语四级
- 题目类型：填空题
- 查看权限：VIP
Aerobic exercise is most 8 for weight loss.
Aerobic exercise is most 8 for weight loss.
The author gives the two examples in paragraphs 2 and 3 to s
The author gives the two examples in paragraphs 2 and 3 to show__________A．how f
All flights_________ (因暴风雪而取消), we decided to take the train
All flights_________ (因暴风雪而取消), we decided to take the train.
Handling relationships is the key to_____________
Handling relationships is the key to_____________
Employers need to_____________
Employers need to_____________A．save money B．work scenario C．know about people's