Ihavebeenstudyinghereforfouryears,bynextsummerI________.
A、shallgraduateIwonderifhecouldgetit________(do)beforetomorrow.
Tosucceedinascientificresearchproject________.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Wooddoesnotconductelectricity;________.