请英语好的朋友帮帮忙造4个句子,asiftodoasifdoingteardownholdup

Question

请英语好的朋友帮帮忙造4个句子,
as if to do
as if doing
tear down
hold up

Answer 1

The man we followed suddenly stopped and looked as if to see whether he was going in the right direction..
He left without a word as if never returning.
They have torn down that dangerous wall.
They were held up by fog.