X. Перепишите следующие предложения и переведите их на русский язык, помня о разных
значениях глаголов to be, to have, to do.
1. I have not written the composition. I’ll have to write it on Sunday.
2. I had to do a lot of homework yesterday.
3. The train is to arrive at ten.
4. Specialists do not use solar cells in industry as they are too expensive.