The rainbow _____ as the sun came fully out from behind the clouds.
| A．dissolved | B．removed | C．resigned | D．disappeared |
The violin will have to be tuned before it _____.
| A．plays | B．should play | C．is played | D．is being played |
Charles Babbage is generally considered_____ the first computer.
| A．to invent | B．inventing | C．having invented | D．to have invented |
_________ I can see, there is only one possible way to keep away from the danger.
| A．As long as | B．As far as | C．Just as | D．Even if |
—Could I ask you a rather personal question?
— _______
| A．Yes, don’t worry. | B．Of course, go ahead. |
| C．Yes, help yourself. | D．Of course, why not? |
Tom kept silent about the accident ______ lose his job.
| A．so not as to | B．so as not to | C．so as to not | D．not so as to |