-How many concerts __________ up to now?-About 25. Last night we __________ our biggest one.
—What were you doing when I rang you this morning?—I was occupied ______ the housework and kept my son occupied______ his homework.
By serving others,a person focuses on someone other than himself or herself,______ can be very eyeopening and rewarding.
Mr.Morse,who graduated from a famous medical university,spent years ______ his skills as a doctor.
He’s _______as a “bellyacher” —he’s always complaining about something.
They are only children of not more than twelve and don’t realize_______to organize such an exhibition.