So although Fleming discovered penicillin, it was over a decade ___________someone else turned penicillin into the great drug of the 20th century.
A.when | B.that | C.before | D.unless |
The man and the horse _____ fell into the river were drowned.
A.Which | B.who | C.that | D.of which |
----- Mr. Chen is a teacher and works very hard.
-----_______ his wife.
A.So does | B.Do I | C.So it is with | D.It is same with |
____ he has been chosen to work as a teacher in the mountain village ____ him feel very proud.
A.That, make | B.Whether, makes | C.That, makes | D.Where, make |
The question is very important. It really needs _______.
A.carefully discussing | B.carefully to discuss |
C.to carefully be discussed | D.being discussed carefully |
Follow the directions on the bottle carefully when _______.
A.you will take the medicine | B.taking the medicine |
C.to take the medicine | D.taken the medicine |