When H7N9 bird flu appeared, people didn't know __________ doctors could cure it.

题型：单选题题类：常考题难易度：普通

牛津译林版九年级英语上Unit 2colours 单元测试（二）

A、if B、that C、what D、why

举一反三

— Yes. There is one on Center Street.

My sister asked me {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} her with her English.

Mr. Green asked her son{#blank#}1{#/blank#} he{#blank#}2{#/blank#} talking to his friend on the Internet.

— He asked .

I am not sure {#blank#}1{#/blank#} her aunt {#blank#}2{#/blank#} in Canada.

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