. It is still unclear ______ the little boy got the CD player to work.
| A．where | B．what | C．that | D．how |
The new CEO demanded that all inter-office communications ______ in writing rather than in person, ______ possible.
| A．have been made; whoever | B．would be made; whichever |
| C．be made; whenever | D．were made; whatever |
______, I suppose, and the housing problems for the low-income families could be solved.
| A．If you double your efforts | B．To make some more efforts |
| C．Some more efforts | D．Making greater efforts |
As it turned out to be the most important meeting in the year, you ____ so casually.
| A．Shouldn’t dress up | B．shouldn’t have dressed up |
| C．needn't have dressed up | D．couldn’t dress up |
With his sporting ambition______ and ________ to succeed in his new life, Li Ning decided to launch a new brand of sportswear, competing with global giants like Nike and Adidas.
A. to achieve; determined
B. to be achieved; determining
C. achieved; determining
C. to be achieved; determined
Green economy offers a new model _____ people could both protect the climate and develop the economy, according to what Li said at the International Conference.
| A．that | B．why | C．where | D．which |