His friends were ___________and encouraged him to publish his ideas, but Copernicus was cautious.
| A．technical | B．official |
| C．educated | D．enthusiastic |
My brother tried ___, but still he couldn't work out this maths problem.
| A．a great deal of | B．a gread deal | C．a number of | D．lots of |
He seemed as if he ___ his homework when his mother came in.
| A．did | B．is to be doing | C．were doing | D．be doing |
The poster says that a writer and poet ___ to give us a talk on English next week.
| A．is | B．are | C．be | D．will be |
How this kind of plant can be ____ in a special way is still unknown to us.
| A．kept away | B．kept out | C．kept alive | D．kept off |
It is in this very village , ___Mary was born 35 years ago , ___ she will build her first school ,
inspires everyone to help her .
| A．where; that ; which | B．that ; that ; that |
| C．that ; when ; which | D．where ; when ; that |