I prefer your _____ plan to this one. 　　[ ]

The hottest continent, Africa has a lot of resources, ______ are still undeveloped.

In Beijing，you can see many people wear masks（口罩） if they _______ out on foggy days．

Would you tell me__________you want your tea , with sugar or milk ?—Sugar , please .

There ______ a school sports meet next Wednesday .-Thanks for telling me the news.