Afterworkingfortwentyhourswithoutanyrest,thedoctorswere_______.
A、exhaustedProfessor Smith is also the _______ of the international program office. If you have any problem when you study here,you may go to him for help.
Thismorningintheclass,ourteacherlosthis______atlastbecausehecouldnotstandanymore.
Thisboywas_______forwhathehaddoneintheclass.
Ihavenotheardanythingfromhimsincehis_______.
Inordertoincreaseouroutput,weneedtoimportmoreproduction_______.
