A．whenever

　　B．whatever

　　C．whichever

　　D．wherever

　　7．When he came back three hours later, they were still sitting on the sofa, ________in conversation.

　　A．absorbing

　　B．absorbed

　　C．to absorb

　　D．to be absorbed

　　8．(2017·河南中原名校联考)________ for the terrible accident, the director felt nervous and was at a loss what to do.

　　A．Having blamed

　　B．To blame

　　C．Being to be blamed

　　D．Being to blame

　　9．Reducing the gap between the rich and the poor is one of the main ________ facing the government.

　　A．difficulties

　　B．challenges

　　C．problems

　　D．conflicts

　　10．(2017·湖北鄂西示范校高三质检)In order not to be deserted by the society, no matter who we are, we

　　must ________ the call of the times.

　　A．lead to

　　B．respond to

　　C．relate to

　　D．refer to

　　11．(2017·河北衡水中学一模)I was much impressed by the great changes and fast pace of life in Shanghai ________ I came to visit this fantastic city.

　　A．at the first time

　　B．for the first time

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