There is no simple answer，________ is often the case in science.
| A．as | B．that |
| C．when | D．where |
________the new computer, travellers at the offices of CAAC can now buy their air tickets much faster.
| A．Because | B．Thanks for | C．Thanks to | D．Since |
Before 1992, there was no airline _________ the two cities.
| A．along | B．in | C．between | D．among |
The food _______ my hometown is quite different ______that there.
| A．in, like | B．to, from | C．from, to | D．in, from |
We are doing much better ______ English _______ our teacher's help.
| A．in, at | B．at, in | C．in, with | D．with, with |
My home is about ________ from my school.
| A．15 minutes | B．10 minute's ride | C．20 minutes by bike | D．15- minute's on foot. |