When first __________ to the market, the computer software was not a success due to its complexity in operation.
| A．introducing | B．being introduced |
| C．introduced | D．to be introduced |
相关试题
He can’t be really reading attentively；he is justpages．
| A．turning off | B．turning around |
| C．turning over | D．turning up |
Marya lot of Spanish by playing with the native boys and girls．
| A．picked up | B．took up |
| C．made up | D．turned up |
What kind of conclusion can weafter having discussed for such a long tinte?
| A．come out | B．come to | C．bring up | D．1ead to |
One of the best ways for people to keep fit is to _______ healthy eating habits．
| A．grow | B．develop | C．increase | D．raise |
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