问题补充：
Wheres Tom? His mother him now.
A. is looking for
B. will look for
C. has looked for
D. looks for
答案：
(答案→)A. is looking for
B. will look for
C. has looked for
D. looks for
解析：句意：汤姆在哪里？他的妈妈正在寻找他。句中有now，表示动作正在进行，句子用现在进行时态，故选A
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