Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Thefloordoesnotlooksobadwhen________(sweep)clean.
You________gonow.It’sgettinglate.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
