31. I don’t understand why she steals things___ she could easily afford to buy them.
| A．when | B．as | C．unless | D．until |
－How do you like our restaurant?－I couldn’t have found a ________ one.
| A．good | B．better |
| C．best | D．fine |
_________ will be years __________ we meet again.
| A．There; since | B．There; after |
| C．It; that | D．It; before |
The boy became fatter and fatter each day and __________ made his parents sad.
| A．which | B．what |
| C．he | D．it |
The secretary worked late into the night, ________ a long speech for the president.
| A．to prepare | B．preparing |
| C．prepared | D．was preparing |
When we were young, every evening my brother and I ______ stay at home waiting for our mother.
| A．would | B．might |
| C．should | D．could |