By boat is the only way to get here， which is _______ we arrived．（ ）
| A． |
where |
B． |
when |
C． |
why |
D． |
how |
—Who should be responsible for the accident?
—The boss, not the workers. They just carry the orders _______.
| A．as told | B．as are told |
| C．as telling | D．as they told |
It was on his way to the station_____ he received the news that his lost daughter had been found．
| A．because | B．Where |
| C．since | D．that |
（陕西）No sooner ________ stepped on the stage than the audience broke into thunderous applause.
| A．had Mo Yan | B．Mo Yan had |
| C．has Mo Yan | D．Mo Yan has |
Only when you leave school________how much you love it.
| A．you will find | B．will you find |
| C．you find | D．did you find |
So mysteriously ______ missing that many puzzles wait to be solved.
| A．did Flight MH370 go |
| B．Flight MH370 went |
| C．does Flight MH370 go |
| D．had Flight MH370 gone |