Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service.
| A．不填；a | B．the；a | C．不填；不填 | D．the；不填 |
– How long _____ in this job? – Since 1990.
| A．were you employed | B．have you been employed |
| C．have you employed | D．will you be employed |
I regret _____ more time with my grandma before she passed away.
| A．not spending | B．not to spend | C．not spend | D．not have spent |
The film was set in a town _____ is now part of Jiangsu Province.
| A．where | B．which | C．what | D．it |
Though _____ with different medicines, the patient hasn’t recovered from the mysterious
illness yet.
| A．to treat | B．treated | C．treating | D．being treated |
You may use my PSP _____ you return it before next Tuesday.
| A．as long as | B．although | C．in case | D．unless |