未知题型 This problem is beyond his ability and he can not ________ it. A.slip B.pack C.gain D.solve

未知题型 My hands and feet were ________ with cold as I waited for the bus. A. cliff B.still C.stiff D.stick

未知题型 The international situation is very _______ in the Middle East. A.delicious B.perfect C.delicate D.percent