There are many words in English, but you can't know e{#blank#}1{#/blank#}English word. W{#blank#}2{#/blank#}you read, you'll often find many new words you don't know. You'll not have enough t{#blank#}3{#/blank#}to stop reading and try to f{#blank#}4{#/blank#}every new word in a dictionary（词典）. S{#blank#}5{#/blank#}you can guess（猜测） the meaning of a new word because you k{#blank#}6{#/blank#}some of the parts of the new word. For example, if a word ends in the letters “er”, that w{#blank#}7{#/blank#} must be the name for a person or a thing that does some action(动作). A writer is a person who writes. Sometimes this is n{#blank#}8{#/blank#} enough to understand a word, but it will h{#blank#}9{#/blank#} you know the article(文章) easily when you are r{#blank#}10{#/blank#}.