Not until……….. did I know that I had lost my key.
A.I have got home
B.did I get home
C.I get home
D.I got home

A ………….. is someone who serves in a community primarily because they choose to do so.
A.voluntarily
B.volunteer
C.voluntariness
D.voluntary

The use of more natural and renewable energy sources is needed to take the burden off our current dependence on…………
A.wind energy
B.fossil fuels
C.nuclear energy
D.solar energy

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questionsHe ……………me of not paying attention to what he had said.
A.thanked
B.warned
C.insisted
D.accused

The government must take measures to cut…..
A.vehicle emissions
B.single
C.diversity
D.ecological balance

NASA, the National Aeronautics and Space…………is an American government organization concerned with spacecraft and space travel
A.Administration
B.Attraction
C.America
D.Assignment

The path was made by walkers…………the mountains each year.
A.they crossed
B.crossing
C.crossed
D.
which they crossed

. “Excuse me, but there is something about…………immediately.”
A.that I must speak to you about
B.which I must speak to you
C.that I must speak to you
D.
which I must speak you about it

Choose the underlined part that needs correction.The girl asked (A) her mother for lending (B) her some money (C) at once (D).
A.some money (C)
B.for lending (B)
C.at once (D)
D.asked (A)

The doctor advised (A) me (B) to not stay (C) up late (D).
A.late (D)
B.advised (A)
C.to not stay (C)
D.me (B)