He knows that ________ is time that he _______

1If I can help________, I don"t like working too late into the night.
A.so
B.that
C.it
D.them
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2He didn"t make clear when and where the meeting would be held.
A.this
B.that
C.it
D.these
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3When you go outing with your sisters, you must see to ________ that they are safe.
A.everything
B.it
C.them
D.yourself
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4He didn"t make ________ clear when and where the meeting would be held. [ ]
A.this
B.that
C.it
D.these
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5You shouldn"t take _____ for granted that your parents care much about you and do so much for you.
A.it
B.that
C.this
D.one
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6I"d appreciate ________ if you would like to teach me how to use the computer.
A.that
B.it
C.this
D.you
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7The fire made ______ difficult to rescue the people trapped under the ruins in the earthquake.
A./
B.this
C.that
D.it
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8They make________a rule not to watch TV during the meal.
A.one
B.it
C.its
D.that
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9— Can I ask you a few straightforward questions about yourself?— No problem. I like _____ when people are open and direct.
A.that
B.this
C.it
D.them
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10The power failure made ________ difficult for us to complete the task on time. [ ]
A.that
B.it
C.one D this
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He knows that ________ is time that he ________.