问题描述:
keep freezing food还是keep frozen food
1.我知道 冷冻食品是frozen food,但是前面是keep,想到了keep doing,到底是哪个?
2.是on my project还是in my project
1.我知道 冷冻食品是frozen food,但是前面是keep,想到了keep doing,到底是哪个?
2.是on my project还是in my project
问题解答:
我来补答展开全文阅读