Помогите с тестом. 1.Selfish people only care about ... . a. themselves b. ourselves c. themselfs d. myself 2.You ... argue with the head teacher. a. mustn`t b. need to c. can d. must 3.They decided to travel by ... plane. a. the b. a c. - 4.... Russian Federation is one of ... biggest country in ... world. a. -,a,- b. the, the, the c. the, - ,the d. a,a,a e. -, the, the 5.He .... go to the cinema tomorrow. a. need to b. - c. might d. must e. should

Selfish people only care about  themselves
You  must not argue with the head teacher.
they decided to travel by plane 
the Russian  Federation is one of the biggest country in the world
he might go to the cinema tomorrow