I rang you at about ten o’clock, but there was no reply. – Oh, that was probably ________ I was seeing the doctor.

‘What can I do?’ I thought hard. Suddenly, a good idea went ______my mind.[ ]

of the students in our classmoney to the quake-hit areas these days.

How many nationalities ______ the country ______？

He goes to school the early bus.[ ]