People______better access to health care than they used to,and they're living longer as result.
will have
have
had
had had
is known to all is that Beijing and Zhangjiakou have been trying to co-host the 2022 Winter Olympic Games on Nov 3, 2013.
The book has helped me greatly in my daily communication, especially at work ________ a good impression is a must.
The man _______ came to see you is my brother.
English is a language shared by several diverse cultures, _________ uses it differently.
I don’t become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.