I know these flowers are not natural, but the _____ ones look more beautiful and can last long.
| A．fresh | B．new | C．true | D．artificial |
Between the two periods of classes is a break, _______ we can have a short rest.
| A．then | B．where | C．when | D．which |
---The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
---____ my students have a try?
| A．May | B．Must | C．Will | D．Shall |
With all the books he was interested in _______, he left the library and went back to his dorm.
| A．borrowed | B．borrowing | C．to borrow | D．borrow |
A series of stimulus policies and supportive measures taken by the government _____ to promote change in the economic environment in this area.
| A．are expecting | B．are expected | C．is expecting | D．is expected |
---Where did you come across our Chinese teacher ?
--- It was in the supermarket ______I purchased mooncakes．
| A．that | B．which | C．where | D．when |