题目内容

Whenshewashere,shealways ____________ aboutthelivingcondition. (complained, have complained)

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ThatwasthesecondtimeI ____________ abroad.(have been, had been)

I ____________ myfavoriteTVshowatseveno'clockthisevening.(will be watching, am watching)

BytheendofOctoberthey ____________theyear'starget. (have hit, will have hit)

It is known that hydrogen ____________ the lightest element.(is, was)

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