Theteahousesituatednearplatform6isnowofferingfreecupsofteatothosefortheXi'antrain．（）A.waitingB.waitC.towaitD.waited
The tea house situated near platform 6 is now offering free cups of tea to those ____ for the Xi'an train．（ ）
A. waiting
B. wait
C. to wait
D. waited
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