I will ring you when I get to the airport.
Will -нужен,так как это условное предложение первого типа ( в глав6ом предложении Future Simple (will+V1) ,а в придаточном Present Simple).
How much rice can you eat
Tower of London - one of the main symbols of the United Kingdom, occupies a special place in the history of the English nation.<span>Tower, a fortress, standing on the north bank of the Thames - the historic center of London and one of the oldest buildings in England. As the Duke of Edinburgh wrote in his book on the 900th anniversary of the Tower, "in its history, the Tower of London was a fortress, palace, royal jewelry store, arsenal, mint, a prison, an observatory, a zoo, a place attracting tourists."</span>
Send sent sent
spend spent spent
know knew known
throw threw thrown
ride rode ridden
write wrote written
make made made
meet met met
buy bought bought
1. A teacher mustn't be late.Учитель не должен опаздывать.
A teacher mustn't cry at the students. Учитель не должен кричать на учеников.
A teacher must be clever.Учитель должен быть умным.
A teacher must be polite. Учитель должен быть вежливым.
A teacher must know more than a student. Учитель должен зпать больше, чем студент.
2. A student mustn't be late for the lessons. Студентнт не должен опаздывать на уроки.
A student always must be ready for the lessons. Ученик всегда должен быть готов к урокам.
A student must do his lessons on time. Ученик должен делать свои уроки вовремя.
A student must always wear a school uniform. Ученик всегда должен носить школьную форму.
A student must respect his teachers. Ученик должен уважать своих учителей.