III. Задайтевопросыквыделеннымсловам.
3.They work at the English Language Laboratorytwice a week.
4.Students know Grammarruleswell.
5.The oldcaroften breaks down.
Use who (preposition + whom), what, when, where, why, how, etc. When a user wants to make a call, WHAT allocates an available frequency ....