Choose the best answer to each of the following questions.
We could not continue due to our ____.
A.tire
B.tired
C.tiring
D.tiredness

Choose the best answer to each of the following questions.
I think _____.
A.that Dr. Pike is a good instructor
B.is that Dr. Pike is a good instructor
C.if that Dr. Pike is a good instructor
D.whether is Dr. Pike is a good instructor

Choose the best answer to each of the following questions.
I’ll bet you can’t guess _____?
A.that what is my occupation
B.how is my occupation
C.what my occupation is
D.what is my occupation

Choose the best answer to each of the following questions.
There will be someone meeting you on arrival.
A.When you arrive, someone will meet you.
B.Arriving, someone will meet you.
C.You will not be met when arriving.
D.No one will meet you as you arrive.

Choose the best answer to each of the following questions.
The last time I saw him was in 2001.
A.Since 2001, I have often seen him.
B.I did not see him in 2001.
C.In 2001, I saw him many times.
D.I haven’t seen him since 2001.

The ________customers thanked the salesperson for the good service.
A.satisfy
B.satisfactory
C.satisfied
D.satisfying

Choose the best answer to each of the following questions.
We are studying Unit 3 in this book.
A.We have completed two units in this book so far.
B.Three units in this book have been studied up to now.
C.We have already studied three units in this book.
D.Unit 3 in this book has been completed.

(12)______
A.where
B.how
C.why
D.which

It was not until the late 1970s when these country people could enjoy the benefits of electricity.
A.not until
B.when
C.these country people could enjoy
D.benefits

(14)_____
A.like
B.so
C.and
D.as