Some hard-working students always keep a torch in their dormitories _____ there is a power failure.
| A．if | B．unless | C．so that | D．in case |
They hope to turn our society into one ______ those in need can get help.
| A．where | B．which | C．when | D．who |
I believe that human cloning is wrong. If we toy with nature, we will have to deal with the _______.
| A．concepts | B．conflicts | C．consequences | D．credits |
The salesman scolded the girl caught ____ and let her off．
| A．to have stolen | B．stealing | C．to steal | D．to be stealing |
With the successful launch of Tiangong-I, which was ______ breakthrough in space field, China's space dream took a step closer to ______ reality.
| A．a; / | B．the; a | C．a; the | D．the; / |
---Jenny, I think I’ll just have some coffee for a change．
---______．The coffee I bought yesterday is in the cupboard．
| A．Change it, please | B．Never mind | C．With pleasure | D．Help yourself |