I learned how________the new computer．
A．to use
B．using
C．use
D．to using
—How long have you________your new bike？
—For two weeks．
A．bought
B．lent
C．had
D．sold
—________she________doing her homework yet？
—Yes，she has．She________it just now．
A．Has；finished；has finished
B．Has；finished；finished
C．Did；finish；has finished
D．Did；finish；finish
She has been in the city________．
A．since eight years
B．for eight years ago
C．since eight years ago
D．eight years ago
Why don’t we consider________the Great Wall next weekend？
A．visiting
B．to visiting
C．visit
D．to visit
That clever boy regards the problems________challenges．
A．as
B．of
C．for
D．to
