He worked late into night. It is{#blank#}1{#/blank#} {#blank#}2{#/blank#} that he looks so tired today.

The writer, {#blank#}1{#/blank#} {#blank#}2{#/blank#} my brother is familiar, {#blank#}3{#/blank#} his father {#blank#}4{#/blank#} president of the company last month.

如果我们做了善事，不仅归功于科学，还归功于引导我们行善的道德选择。

As a musician，he {#blank#}1{#/blank#}always{#blank#}2{#/blank#}various sounds.

Even today, {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} Chinese people live, they can all still communicate in writing.