问题：
She ______his number in her phone book to ______that she had got the right number.
A．looked for , be certain
B．picked up , make sure
C．picked out , be sure
D．looked up, make sure
She ______his number in her phone book to ______that she had got the right number.
| A．looked for , be certain | B．picked up , make sure |
| C．picked out , be sure | D．looked up, make sure |
参考答案：