Ihavebeenstudyinghereforfouryears,bynextsummerI________.
Herefusedtotelluswhetherhe________(undertake)thejob.
Night________(fall),wehurriedhome.
Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Wooddoesnotconductelectricity;________.
Ifound________toanswerallthequestionswithinthetimegiven.