Убрать скобки, употребляя нужное слово 1.the talker (can, must) remember that conversation (must, should) serve a purpose. 2. we frequently (may, have to) use refence book and encyclopaedias where we (must, can) find information we need at the moment. we (cannot, neednot), of course, read reference books from cover to cover. 3.writers do not always express things directly so that you (to have, to may) think carefully to see what thay mean. 4. readeing a book (need, should) be a conversation between you and the author. 5. to achieve progress in any subject we (may, must) discuss things. 6.it (can, must, may) be born in mind that somr people are afraid jf having time to thing time to think, so they go to the movies, watch television, ect, because they (should, can) think of nothing better to go. 7, when we are introduced to new people we(shold, need) try to appear friendly.
2. have to, can, needn't
3. have to
4. should
5. must
6. must, can
7. should