________he made careful observations of the habits of ants for a week, the teacher asked him for an oral report of his findings to the whole class.
A: After
B: While
C: When
D: Before
A: After
B: While
C: When
D: Before
举一反三
- ________ he made careful observations of the habits of ants for a week, the teacher asked him for an oral report of his findings to the whole class.
- After I made observations for a week, Mr. Hobbs asked me ______ an oral report of my findings. A: to B: for
- After making observations for a week in the plant, the industrial engineer made a number of very constructive suggestions in an oral report to the manager.() A: careful B: cautious C: deserved D: helpful
- After making observations for a week in the plant,the researcher made many very ____ suggestions in an oral report to themanager.
- After making observations for a week in the plant,the researcher made many very ____ suggestions in an oral report to themanager. A: sensitive B: constructive C: definite D: generous