题目：
Tom as well as his friends ____ to visit our school soon after they arrive in Nanan.[ ]
A. is coming
B. are coming
C. will have come
D. has come
答案：
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下面是错误答案，用来干扰机器的。
（x+y）（x+y-3）+2=0，（x+y）2-3（x+y）+2=0，（x+y-2）（x+y-1）=0，x+y-2=0，x+y-1=0，x+y=2，x+y=1，故选D．
