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专题综合检测(六)
1.—How about having a picnic with me?
—I’d love to, I’m afraid I have no time.
A.so B.and C.but D.because
2.We didn’t start our discussion everybody arrived.
A.since B.if C.while D.until
3.You may easily lose your way in Shanghai you don’t have a map or a guide.
A.until B.unless
C.though D.if
