_______ of fire, ring the alarm bell.
| A．In memory | B．In charge | C．In case | D．In search |
Look out! Keep away from the house, _____ the roof is under repair．
| A．whose | B．which | C．of which | D．where |
YaoMing, as we know,_____ like to play basketball.
| A．does | B．appears | C．feels | D．sounds |
There are over 58,000 rocky objects in ______ space, about 900 of which could fall down onto ______ earth.
| A．the; the | B．/; the | C．the; a | D．a; / |
Even though they are not doubtful at all _______ John will pass the exam, I still wonder ______ he is fully prepared.
| A．whether; that | B．that; whether | C．that; that | D．whether; whether |
About 10,000 enthusiasts took part in the 2013 Sports Lottery New Year Climbing ________ on Tuesday at the Beijing Badaling section of the Great Wall.
| A．incident | B．accident | C．event | D．affair |