the

After 15 years in the United States, he has finally decided to　　　　American citizenship.

The wild flowers looked like a soft orange blanket ______ the desert.

---Is the bookstore _______ now? ---No, it’s __________.

The real trouble ____ their lack of confidence in their abilities

In the modern technological world the sea offers many ______ to help mankind survive.

Guests were ­­­­_________ into the few remaining rooms.

Even under the best conditions, we couldn't finish in ________ three days.

You _______ to lock the door at night.

——The coffee is good. ________? ——Certainly. I am very glad you love it.

_____ his wife will sit at the table to wait for him to come back