This office is very dirty and in a mess; it ________ cleaned.
举一反三
- This office is very dirty and in a mess; it ________ cleaned. A: can’t have been B: mustn’t have been C: wouldn’t have been D: shouldn’t have been
- “Why are the school windows so dirty?’’ “Because ___ to have them cleaned.”
- Look at the terrible mess! You _________ cleaned the house before I came back.
- How dirty the tables are! They need ( ). A: to clean B: cleaning C: to be cleaning D: cleaned
- And it's [u]dirt-cheap[/u], not to mention cool-looking. A: very cheap B: very dirty C: dirty and cheap D: expensive