— ______sleep do you think is necessary for a Grade 9 student?— 8 hours at least.

题型：单选题题类：模拟题难易度：普通

— ______sleep do you think is necessary for a Grade 9 student?
— 8 hours at least.

A、How often B、How long C、How many D、How much

举一反三

-- Because they are very cute.

{#blank#}1{#/blank#}will make a robot in five years'time?

{#blank#}1{#/blank#} {#blank#}2{#/blank#}would you like to buy？

{#blank#}1{#/blank#} {#blank#}2{#/blank#}the weather yesterday?

{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}this black hat?

{#blank#}1{#/blank#} {#blank#}2{#/blank#} go shopping with me?

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