We were about to climb up to the top of the mountain ________ it began to rain heavily.
| A．as | B．while | C．when | D．since |
Every Friday afternoon of this month is _____ as a time when students can learn how to design a website.
| A．set aside | B．set out | C．set up | D．set down |
We all know the truth _____ there is air, water and sunlight, there are living things.
| A．that what | B．what that | C．where what | D．that where |
When he reflected on his failure in the interview, he found that he _____ some inappropriate comments regarding the topic mentioned.
| A．could have made | B．should have made |
| C．must have made | D．would have made |
--- Since you can't find a better way out for the time being, why not follow his advice?
--- oh, you are right. ______.
| A．I believe so | B．I might as well | C．It doesn't matter | D．I don't care |
___ the poem for a second time, the meaning will become clear to you.
| A．While reading | B．If reading | C．When read | D．When you read |