untry’s population ______ small, andmost of its population ______ in the mountainous areas．

The crossing was blocked by many trucks andbuses, made itimpossible for us to go to work on time.

your son a computer——No.He one this summer vacation.

I practice speaking English every day, but Tom doesn’t. He is _______ than me.

I had to take ________ umbrella with me because of ________ terrible weather.