1)the pen is in your bag
2)where is my pen
3)is this camera your brother's
4)have you got an alarm clock
Woke
flew
thought
drove
Who has eaten ...
teaches
1If you are busy I'll leave you alone.
If you were busy I would leave you alone.
If you had been busy I would have left you alone.
2If my friend comes to see me I will (shall)be very glad.
If my friend came to see me I would be very glad.
If my friend had come to see me I would have been very glad.
3If he sends an e-mail we won't(shan't) worry.
If he sent an e-mail we wouldn't worry.
If he had sent an e-mail we wouldn't have worried.
Tell- что то рассказывать, say- говорить