It is impolite to _______ in others' private affairs.
A:interfere (in/with)
B:involve (n./v-ing)
C:interrupt
D:influence
Eventually, they gave up the project to build a bridge over the river because of the _______ high costs it would involve.
A:excessively
B:expensively
C:effectively
D:efficiently
You should take care that you have not ________ any detail in the design.
A:disappeared
B:thrown
C:delivered
D:neglected