_____ for making so many mistakes in the exam, she was in low spirits.
| A．Having blamed | B．To blame | C．Blamed | D．To be blamed |
—Only one of these books is worth _______.
—_______ is no wonder that you look so upset.
| A．to read; That | B．of reading; This | C．being read; There | D．reading; It |
Service was included in the bill, so you _______ the waiter. It was a waste of money.
| A．will not tip | B．may not tip | C．needn't have tipped | D．mustn't have tipped |
When you copy this paper, be careful not to ______ a single word.
| A．leave out | B．come out | C．set out | D．bring out |
Why does she steal things ________ she could easily afford to buy them?
| A．when | B．where | C．unless | D．which |
My parents would have come to see you if it had been possible, but they ________ so busy.
| A．were | B．had been | C．have been | D．would be |