The man is____ a serious nervous breakdown because he is unable to deal with pressure from daily life.
| A．at the edge of | B．on the edge of | C．on behalf of | D．on the top of |
Let Harry play with your toys ______, Clare. You must learn to share.
| A．at last | B．in secret | C．after all | D．as well |
Steel and iron can be used ______ bridges as well as machines.
| A．to make | B．to making | C．make | D．making |
Children are always ______, and usually think differently from adults.
| A．satisfied | B．social | C．untrue | D．creative |
I’m sure you ______ to us just now, because we already know the truth.
| A．lay | B．laid | C．lie | D．lied |
I have many friends, __________some are businessmen。
A of them B of whose C of which D of whom