My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .

It was difficult being in a foreign country, ________ if you don’t speak the language.

. Come _____. I’ll introduce my _____friend, Bob, to you.

 _______ eager to get access to the president, the boy in northern America wrote a letter to him.

What has he been doing _________? I haven’t seen him much recently.