I should not have laughed if I________ you were serious.
| A．thought | B．would think |
| C．had thought | D．have thought |
The thought of going back home was _____kept him happy while he was working abroad.
| A．that | B．all that | C．all what | D．which |
The documents are very important, so they are supposed ______ as soon as possible.
| A．to be sent | B．to send | C．being sent | D．sending |
With the guide _______ the way, we finally got to the beautifu mountain village which we
were looking for.
| A．led | B．leading | C．to lead | D．had led |
Not until the mid-term approached ____________ how much time I had wasted.
| A．did I realize | B．didn’t I realize | C．I didn’t realize | D．I realized |
--- Why didn’t she ask for help at that time?
--- You know, at such a midnight, there was no one ________.
| A．she could turn to | B．for whom to turn | C．who to turn to | D．for her to turn |