In _______ 1940s the computer was made to work as _______ useful machine.
| A．the; an | B．the; a | C．/; a | D．/; an |
She said she would work it out herself, ________ ask me for help.
| A．and not to | B．but not | C．and prefer not | D．rather than |
________ a difficult situation, so you should send him a message and give him some advice.
| A．As he is in | B．He is in | C．Being in | D．He being in |
—Oh, I failed again
—Don’t lose heart. One more effort, ________ you will succeed.
| A．so that | B．therefore | C．however | D．and |
I told Sally how to get here, but perhaps I _______ for her.
| A．had to write it out | B．must have written it out |
| C．should have written it out | D．ought to write it out |
The old house, in front of ________ there is an apple tree, is ________ I used to live.
| A．that, the place | B．it, the place | C．which, where | D．what, where |