Fill in the correct preposition.
My dog kept barking________ him because he was a strange person.
A.on
B.in
C.at
D._______

Fill in the correct preposition.
You shouldn't believe________what he says.
A.in
B.on
C.out
D.___

Choose the best answer to complete each of the following sentences.
I lost my pen. I have looked_________it for all morning.
A.up
B.after
C.for
D.at

Choose the best answer to complete each of the following sentences.
She stays at home because she has to look______her baby.
A.after
B.for
C.up
D.at

Choose the best answer to complete each of the following sentences.
Can you turn________ the radio? I'm learning my lessons.
A.of
B.in
C.off
D.on

Choose the best answer to complete each of the following sentences.
Would you like to_________the games with us?
A.take part in
B.take down
C.take off
D.take in

Choose the best answer to complete each of the following sentences.
It took me some minutes__________the problem.
A.solve
B.solving
C.to solve
D.solved

Choose the best answer to complete each of the following sentences.
We can protect the environment by_________air pollution.
A.to reduce
B.reduced
C.reducing
D.reduce

Put the correct word from the following list in each space below.
and - but - because - although - or - so - therefore - however
She passed the examination easily__________she isn't very intelligent.
A.however
B.because
C.but
D.although

Put the correct word from the following list in each space below.
and - but - because - although - or - so - therefore - however
She didn't have a map__________ she got lost.
A.although
B.therefore
C.however
D.but