Not until they left school ___ how much their teachers loved them and helped them．
| A．they realized | B．did they realize |
| C．they had realized | D．had they realized |
Camacho，the former Chinese football coach，__________ in China between 2011 and 2013
| A．have worked | B．worked | C．had worked | D．works |
—Mum, shall I watch the TV program Happy Camp today?
—__________.You have so much homework to do!
| A．Forget it | B．Not at all | C．Go ahead | D．That’s right |
Last night on my way home I saw an old lady driving a BMW car at __________I thought was a dangerous speed.
| A．that | B．which | C．what | D．how |
Word came that Chinese sports delegation has won 9 medals in the 2014 Winter Olympics in Sochi，Russia, __________the 12th of the medal list.
| A．ranking | B．ranked | C．to rank | D．having ranked |
It will be about 100 days __________the College Enhance Examination comes.
| A．when | B．as | C．before | D．since |