The boy was playing with a cat _____ a UFO landed before him. [ ]A. thatB.

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The boy was playing with a cat _____ a UFO landed before him. [ ]
A. that
B. while
C. when
D. because

答案

举一反三

My pet dog was runing fast _____ I couldn"t follow him. [ ]
A. for
B. that
C. so that
D. because

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She asked me she could copy my homework.[ ]
A. if
B. for
C. that
D. weather

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Would you mind __ I play the violin here? [ ]
A. when
B. if
C. because
D. how

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—How long has he been studying English?
—       he was six years old.[     ]
A.Since
B.For
C.At
D.On

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—I hear the famous singer Xu Song may come to Ningbo next month.
—Really? _____ he comes, my younger sister will be very excited.[     ]
A. If
B. Until
C. Unless
D. Before

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