The school rules state that no child shall be allowed out of the school during t
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| The school rules state that no child shall be allowed out of the school during the day, _____ accompanied by an adult. |
A. once
B. when
C. if
D. unless |
答案
举一反三
| The little boy won"t go to sleep _____ his mother tells him a story. |
A. or
B. unless
C. but
D. whether |
| _____ they decide which college to go to, students should research the admission procedures. |
A. As
B. While
C. Until
D. Once |
| Part of the reason Charles Dickens loved his own novel, David Copperfield, was _____ it was rather closely modeled on his own life. |
A. what
B. that
C. why
D. whether |
| The engineers are so busy that they have zero time for outdoor sports actives, _____ they have the interest. |
A. wherever
B. whenever
C. even if
D. as if |
| Just use this room for the time being, and we"ll offer you a larger one _____ it becomes available. |
A. as soon as
B. unless
C. as far as
D. until |
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