---Do you know ______ I could pass the exam? ----Sorry, I’ve no idea.
---What’s this _____ English? ---It’s an eraser.
Two and four is________.
--- What’s this, Xiao Hong?— It’s _____ orange.
Must we sweep the floor right now? No, you _______. You can do it later.
Excuse me, may I ask you some questions, Jane? OK, _______.