Thistest________anumberofmultiplechoicequestions.
A、composesofIwonderifhecouldgetit________(do)beforetomorrow.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Ifound________toanswerallthequestionswithinthetimegiven.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Hotmetal________asitgrowscooler.
