Scientists thousands of chemicals before they decided on the right one in the end .
| A．tried out |
| B．found out |
| C．worked out |
| D．turned out |
Do you know
that with wise men improves your mind?
| A．chat | B．chats | C．chatted | D．chatting |
The house rent is expensive. I’ve got about half the space I had at home and I’m paying________here.
| A．as three times much | B．as much three times |
| C．much as three times | D．three times as much |
Did you findimpossible for him to tell the truth?
| A．this | B．it | C．that | D．what |
--- What happened to your shoes?
--- They want .
| A．to mend | B．being mended | C．mending | D．mended |
It is generally considered unwise to give a childhe or she wants.
| A．however | B．whatever | C．whichever | D．whenever |