He telephoned the travel agency to ________ three air tickets to London.
| A．order | B．arrange | C．take | D．book |
He looked at the envelope and __________ Jenny’s handwriting immediately.
| A．understood | B．knew |
| C．recognized | D．recovered |
It is said that more than ten thousand workers have ______ the strike(罢工).
| A．joined | B．joined in |
| C．attended | D．take part |
This exam is very difficult. Many students are concerned ________the results.
| A．about | B．with | C．in | D．of |
— Can you help me _________ all the money that I should pay?
— Very sorry. Please wait a minute, madam.
| A．add up | B．add up to | C．add to | D．add together |
______ get a better score, she has been studying hard all day.
| A．So as to | B．In order to |
| C．So that | D．In order that |