должны открыть книгу. a) I read the book.a) I read
the book. a) Must you open? b) She must the floor.b) She must the floor. b) You must open the book. c) I must wash the floor.c) I must wash the floor. c) I must write. Она должна Мы не должны читать. поиграть со мной. a) I must play.a) I must play. a) They dust must. b) She must play with me. b) She must play with me. b) We must not read. c) He must go.c) He must go. c) They must dust.