3、ard,Let’sstayathome.AWhat; Because BHow;As CWhata; Since DHowa;Though6、--Howmuchdifficultydidyouhave_______thisproblem? ---_______. A.tosolve,Nothing B.tosolve,None C.withsolving,Nothing D.solving,None7、What______________mostisthathetoldalie. A.proves B.faces C.matters D