On summer nights, the weather is usuallyhot at night in the south of China.— Yes, so I often go to sleep ______ the window________.

We should _____the old traditional ideas and build up new ones.[ ]

Our teacher did what she could ______uswith English.

This work needs teamwork. ______ will be achieved unless we work well together.

I wish for a family____________my parents are treating me like a friend.