We must be strict ______ ourselvesand ______ our work. [ ]

John is my _____friend of all the classmates.

Are you going to help John with his Chinese this evening?—No，He ________ to England．He will be back next month．

I don’t want to go to school on foot. What should I do? —You try asking your father for a bike, or you can go by bus.

His sudden death surprised his wife. — It was so bad. His wife was surprised ____ his death. [ ]