Both by and with can be used to say how somebody does something, but there is an important difference.

We use by when we say what we do to get a result.

Fill in the blanks with appropriate prepositions.

1. Silkworms feed ———– mulberry leaves.

a) at
b) on
c) from
d) with

2. Alice excels —————- dancing.

We do not normally use prepositions in some common expressions.

After certain verbs
The verbs enter, discuss, marry, lack, approach and resemble are usually followed by direct objects without prepositions.

Fill in the blanks with suitable prepositions.

1. I have been ill ————– three months.

a) for
b) since
c) from
d) to

1.    The cat was hiding ———————- the bed.

a)    On
b)    In
c)    Under
d)    Over

2.    She sat —————— her children.

a)    Between
b)    Among
c)    On
d)    In

Fill in the blanks with appropriate prepositions.

1.    A little child cannot distinguish good ——————– evil.

a)    Between
b)    By
c)    For
d)    From

Fill in the blanks with appropriate prepositions.

1.    He has heavily invested ——————- shares.

a)    With
b)    On
c)    In
d)    For

2.    Let’s talk ——————— something else.