(2013·重庆模拟)—When did your brother begin to show his interest in medicine?
—It was a Saturday he noticed his classmate experimenting on a frog in the lab.
| A．that | B．what |
| C．when | D．which |
相关试题
Sally's never seen a play in the Shanghai Grand Theatre,?
| A． | hasn't she | B． | has she | C． | isn't she | D． | is she |
A small plane crashed into a hillside five miles east of the city, _____all four people on board. 
| A．killed | B．killing | C．kills | D．to kill |
You can’t borrow books from the school library ______ you get your student card.
| A．before | B．if | C．while | D．as |
With the government’s aid, those _____ by the earthquake have moved to the new settlements.
| A．affect | B．affecting | C．affected | D．were affected |
推荐套卷
粤公网安备 44130202000953号