______all  the homework assigned by the school the students have to work at it till midnight
#89573
A
Completing
B
To complete
C
Having completed
D
To have completed
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The plan to be carried out next month needs ______ among the members of the labor union before ______.
#93636
A
to discuss;carrying out  
B
to be discussed;carried out
C
discussing;being carried out   
D
discussed;to be carried out
—Please go on with your demonstration.—But where was I?—Well, you_____the two chemicals together.
#95249
A
tried to mix
B
were trying to mix
C
were trying mixed
D
had tried to mix