many thousands of people have been infected with the virus.为什么infect要加ed,是因为他是被动语态吗?凡是被动语态动词都要加ed吗?

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• many thousands of people have been infected with the virus.为什么infect要加ed,是因为他是被动语态吗?凡是被动语态动词都要加ed吗?
• 那they are 什么than we think,可选more friend,many friends,more friendly,much friend
• Many teenagers feel that the most important people in their life are their friends.They believethat their family members don't know them as well as their friends d开头的单词.In large families,it is quite often for brothers and sisters to fight with each other and they can only go to their friends for some ideas.It is very important for teenagers to have one friend or a group of friends.Even when they are not with their friends,they usually spend a lot of t