in stuying we must have patience

in stuying we must have patience which university is he stuying at 还是in? We must stand in line.改为祈使句 We must be quiet in the library. Even in we must learn to smile, we must keep( ) in the hospital we must help the animals in d_____ We must learn knowledge in m______ society. Grandma is ill.We must take her to the h( ). We must hand in the homework in time.有错吗? Nowadays,the earth is p_______s_____.Our earth is in d_______.We must p_______the earth.We must keep the earth c_____.We must stop p_______the earth.We must ___________________ We must your homework must be h in before school is over Then we have winter (h )in February. We must(h )each other求h后面该怎么填 We must hand in our homework _____ time. We must listen our teachers carefully in class.改错 What rules ____ we ____ (must obey)in the classroom