1 People can use their computer to talk to each other .人们可以用他们的电脑互相聊天/说话.
2 If you arrive late ,your teacher will not be pleased.如果你到迟,你的老师会不高兴的/不满意的.
3 English helps you write e-mail quickly .英语帮助你更快地写邮件.
谜语（riddle ）象征（symbol ）正常的（normal ） 实验（experience ）