My study of biology has ___ much of my spare time, ____ it has given me a great deal o enjoyment.
| A．taken off, and | B．taken down, so | C．taken up, but | D．taken away, or |
For all these years I have been working for others. I am hoping I will ___ my own business some day.
| A．set down | B．set about | C．set out | D．set up |
I know you are very ________ ice cream, but you will gain weight if you eat too much.
| A．fond of | B．tired of | C．full of | D．afraid of |
I have _______ my memory for his name, but I can’t remember it.
| A．searched | B．searched for |
| C．been in search of | D．searched of |
It is reported that two schools, ________ are being built in my hometown, will open next year.
| A．they both | B．which both |
| C．both of them | D．both of which |
The scientist knows nothing about the matter, because he is always ______ himself in scientific study.
| A．burying | B．devoting | C．focusing | D．concentrating |