She is being pleased about it; she is very angry．
| A．free from | B．free of | C．out of | D．far from |
A large number of students in our school ____ from the countryside; the number _____ growing these years.
| A．is; has been | B．are; has been |
| C．is; have been | D．are; have been |
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 |