During the last three decades, the number of people participating in physical fitness programs ___ sharply.
| A．was increasing | B．has increased |
| C．had increased | D．will be increasing |
——Do you mind my taking this seat? ——________.
| A．Yes, sit down please | B．No, of course not |
| C．Yes, take it please | D．No, you can't take it |
______, I am not satisfied with your work.
| A．Telling the truth | B．To tell the truth | C．Being told the true | D．To have told the truth |
I knew I should not accept anything from such a person but I found it difficult to turn down his ___.
| A．plan | B．offer | C．suggestion | D．request |
He was seen ______ a letter in his bed room.
| A．write | B．to write | C．written | D．wrote |
——Don't you think it's going to rain over the weekend?
——_______.
| A．I don't believe | B．I don't believe it | C．I believe not so | D．I believe not |