Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction.
My brother can swim very well when he was 6 years old.
A.can swim
B.well
C.when
D.was 6 years old.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Many species of plants and animals are threatened with __________.
A.extinctions
B.extinct
C.extinctive
D.extinction

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
__________the weather is, __________I feel.
A.Warmer/ better
B.The warmer/ the better
C.The warm/the good
D.The warmest/ the best

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
To save energy, please __________ the lights when you leave the rooms.
A.put on
B.put off
C.turn off
D.turn on

I didn’t see you ___________ the party on Saturday. Where were you?
A.to
B.by
C.at
D.on

I don’t know where my umbrella is. Perhaps I left it ___________ the bus.
A.to
B.by
C.at
D.on

Shall I travel __________ your car or mine?
A.in
B.by
C.at
D.on

Tom is ill. He wasn’t _________ work today. He was ______ home _______ bed.
A.to/on/ of
B.by/to/in
C.in/ at/ at
D.at/ at/ in

I wasn’t __________ when you phoned. I was __________ my sister ‘s house.
A.in/ at
B.by/ to
C.in/ on
D.at/ in

It ‘s always too hot ________ my sister's house. The heating is always on too high.
A.to
B.by
C.at
D.in