Use Appropriate preposition in the blank

He succeeded _____ solving his problem.

Change sentence as directed:

We must help him. (Negative)

Fill in the blanks with appropriate word/article/preposition:

The headmaster was angry . . . . . . the students.

Fill in the blanks with appropriate preposition.

You are ______ time.

Fill in the blanks:

A true friend is ____ asset.

Fill in the blanks with appropriate prepositions

I made . . . . . . my mind . . . . . . go there.