When my father is (A) young, he used (B) to walk (C) a long distance, but now he is too old (D) to walk.
A.walk (C)
B.used (B)
C.too old (D)
D.is (A)

Your bag is possible (A) in (B) the car. I did not (C) see you take it along with (D) you.
A.possible (A)
B.in (B)
C.along with (D)
D.did not (C)

Clark is not only (A) a kind man who is always willing to help (B) people when they're in (C) troubles, he has a perfect masculine body as well (D).
A.not only (A)
B.in (C)
C.as well (D)
D.willing to help (B)

Their house was sold (A) three years ago actually belonged (B) to (C) us (D).
A.was sold (A)
B.to (C)
C.us (D)
D.belonged (B)

Increased consumption will lead to faster _______ of our natural resources.
A.exhaustion
B.exhaust
C.exhaustively
D.exhaustive

We should develop such _______ sources of energy as solar energy and nuclear energy.
A.surprising
B.revolutionary
C.alternative
D.tradition

The fence _______ our house is made of wood.
A.surrounding
B.surrounds
C.surround
D.to be surrounded

There is now increasing concern about the world's energy ______ particularly about those involving fossil fuels.
A.goods
B.resources
C.possessions
D.materials

There are six letters _______today.
A.to write
B.to be written
C.writing
D.written

Choose the best answer to complete the following sentences._______ in large quantities in the Middle East, oil became known as black gold because of the large profit it brought.
A.Which was discovered
B.Discovered
C.That when discovered
D.Discovering