对画线虚词解释不正确的一项是[　　　 ]

_____ to severe problems in theirlife

下列各组词语中加点字的注音，全都正确的一项是

eam finished most of their research work—Yes, but therest rather difficult

(2013·长沙高考模拟)I ________ him in time, otherwise he would have fallen off the bike