---David, why are you so excited?
---My father has made a ______that he will take me to Tibet next month..
| A．face | B．promise | C．mistake | D．joke |
I can hardly work out the answer _____ this difficult question.
| A．of | B．to | C．in | D．for |
I got a letter this afternoon. It was ____ my foreign friend.
| A．from | B．in | C．in | D．at |
I’m all ____ sea and I’ve no idea how to fix my pencil box.
| A．in | B．on | C．at | D．off |
We built this factory ______ top speed and minimum(最少的) cost.
| A．in | B．at | C．with | D．on |
There is a big and beautiful lake ______ the foot of the hill.
| A．at | B．in | C．with | D．on |