You can keep all the files and documents you think it is convenient to get them．
| A．what | B．how | C．where | D．when |
–I tried many times, but I still failed in the experiment.
--Don’t be discouraged. _______ and the problem will be settled.
| A．Having a little effort | B．There is a little effort |
| C．If you have a bit effort | D．A bit more effort |
I try to make him understand that I am not interested in him, but he never gets the ______.
| A．information | B．news | C．word | D．message |
Baird invented _______ television, _______ invention that would later completely change people’s life.
| A．/; the | B．a; / | C．the; an | D．/; an |
It’s really _____ fun to walk alone with _____ full moon hanging in the sky.
| A．a; the | B．a;/ | C．the; a | D．/; a |
If you warn me _____ , I’ll have your order ready for you.
| A．in brief | B．in return | C．in advance | D．In general |