【C7】A．usedB．happenedC．seemedD．found

Every one of them ________ tired and wanted a good rest.A、seemsB、is seemedC、was seemedD

A．usedB．offeredC．triedD．attempted

【C18】A．usedB．chosenC．takenD．spent

A similar approach can be ______to innovation.A．usedB．appliedC．triedD．employed

More heavy rains______in summer than any other time of the year.A．happenedB．have happenedC

He ________ get up early while he was in the middle school.A、was usedB、used toC、got used