The problem was raised _____ we should get all the machines _____.
A. that; to repair B. which; repaired
where; to be repaired D. when; repaired
You should report any incident, _____ serious or minor it is.
| A．what | B．how | C．whether | D．However |
The photo was taken ______ stood the famous Bird’s Nest in Beijing during the Olympics.
| A．which | B．in which | C．where | D．there |
I had just stepped out of the bathroom ______ I heard the steps.
| A．while | B．when | C．since | D．after |
This is a very interesting book．I’ll buy it，．
| A．how much may it cost | B．it may cost |
| C．however much it may cost | D．how may it cost |
Parent should take seriously their children’s requests for sunglasses _______ eye protection is necessary in sunny weather.
| A．unless | B．because | C．though | D．so |