We must ______ that the experiment is controlled as rigidly as possible.
A、assureA
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TheTVstation,in________tomassivepopulardemand,decidedtocontinuethesoapopera(肥皂剧).
Ifyouwanttofindadecentlocationforyourownhome,________Mr.Smithforadvice.
Asyoulikepopmusic,__________Ilikeliterature.
Theproblem________whenthestudentsrefusedtodotheirhomework.
She________hernervousnesstotheimportanceoftheinterview.
