题目内容
填入适当的介词。
He looked around the room and wished to impress everything ________ his mind.
根据句意和本单元学过的内容,填入适当的介词或副词
He did not look forward _________ being _________ debt because his restaurant was no longer popular.
在下面定语从句中填入适当的介词
He built a telescope ________ which he could study the skies.