Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Scientists now understand ____________.
A.how birds navigate over long distances
B.how to navigate over long distances the birds
C.how to distance the birds from navigating
D.how long distances navigate the birds

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
__________he followed my advice, he__________ be unemployed now.
A.Unless/ can’t
B.Should/ will
C.Were/ would not
D.Had/ would not

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
My friend always dreams of having _____________.
A.a small red sleeping bag
B.red sleeping small a bag
C.small a bag red sleeping
D.a bad small red sleeping

(64.______)
A.apartment
B.work
C.departure
D.office

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
______ get older, the games they play become increasingly complex.
A.For children to
B.Children, when
C.Although children
D.As children

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It was not until the end of the nineteenth century ______.

It was not until the end of the nineteenth century ______.

A. did plant breeding become a scientific discipline B.that plant breeding became a scientific discipline oweHHHHHHHHHHHkk

C.that a scientific discipline was plant breeding D.did a scientific discipline become plant breeding
A.did plant breeding become a scientific discipline
B.that plant breeding became a scientific discipline
C.that a scientific discipline was plant breeding
D.did a scientific discipline become plant breeding

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
This survey is to find out the young people’s attitudes _______ love.
A.into
B.with
C.for
D.toward

(66.______)
A.by
B.with
C.from
D.of

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
If I had been absent from class yesterday, I___ the math test.
A.would miss
B.would have missed
C.will miss
D.miss

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The teacher as well as his students___________ at the school meeting yet.
A.arrived
B.hasn’t arrived
C.haven’t arrived
D.not arriving