Ⅰ.单句语法填空(高考真题改编)
1. (2019年天津卷)Kate heard a man's voice in the background, but she couldn't make ________ what he was saying.
解析：句意：凯特听到后台有一个男人的声音，但她听不清他在说什么。根据句意可知，这里make out意为“听清，辨认清楚”。
答案：out
2. (2019年天津卷)A dog's eating habit requires regular training before it is ________ (proper) established.
解析：句意：狗的饮食习惯需要有规律地训练才能正确地养成。此处用副词properly意为“恰当地，正确地”。
答案：properly
