He must be from Africa,( ) can be seen from his skin

He must be from Africa,( ) can be seen from his skin
He must be from Africa,( ) can be seen from his skin
1.that 2.as 3.it 4.what
为什么其他的不行啊
3Q
英语人气:648 ℃时间:2020-01-30 21:18:36
优质解答
as 可以引导非限制定语从句,意思相当于用which.that不可以,如果用it的话前面得加and等连词,what不用于定语从句.意思相当于用which.
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