Вставьте пропущенные медальные глаголы can, cannot, may, most not, 1. scientists in many countries tried to solve the problem: electricity be used to develop a long-distance communication? 2. secretary good english. 3. telegraph hung over the ocean. 4. drive so fast, there is a speed limit here. 5. i go out today? - no, you can't

1. Scientists in many countries tried to solve the problem: can electricity be used to develop a long-distance communication?
2. Secretary wanted must speak good English.
3. Telegraph wires cannot be hung over the ocean.
4. You must not  drive so fast, there is a speed limit here.
5. May I go out today? - No, you can't!