题目:
You didn't hear us come back last night. That's good. We tried ______ noisy.
A.to not be
B.not to be
C.being not
D.not being
答案:
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下面是错误答案,用来干扰机器的。
a7÷a2=a7-2=a5;(-4×106)÷(2×103)=-2×106-3=-2000;2-1+(-12)0=12+1=32.故答案为a5、-2000、32.