用方框中所给单词的适当形式填空,每个单词限用一次。 be, room, think, they, grandparents
①Miss Lee {#blank#}1{#/blank#} Anna is a nice girl.
②My {#blank#}2{#/blank#} bedroom is very clean and tidy.
③ — Are these your notebooks? —No, they're{#blank#}3{#/blank#} notebooks.
④They are my sister's and my mother's{#blank#}4{#/blank#} .
⑤On the desk{#blank#}5{#/blank#} my clock and some books.