--- How do you deal with the disagreement between the company and the customers?
--- The key ____ the problem is to meet the demand____ by the customers.
| A．to solving; making | B．to solve; making | C．to solving; made | D．to solve; made |
All passengers ___ to show their tickets next time.
| A．require | B．will require | C．are required | D．are to require |
He placed one of the arrows __ his bow.
| A．in | B．on | C．at | D．against |
___ from a plane, the Great Wall looks like a huge dragon.
| A．Seeing | B．Seen | C．To see | D．Look out |
Africa is actually connected with Asia at the spot ___ the Suez Canel was dug.
| A．when | B．where | C．which | D．and |
Many buildings ___ in the eathquake.
| A．put down | B．lay down | C．fell down | D．knocked down |