______ for a long time, but he managed to catch up with his classmates at last.

Catherine Ⅱ had the Amber Room moved to a palace outside St. Petersburg __________ she spent her summers.

Washington DC is _____ beautiful city. Itis _____ capital of _____ USA.

ately, someone who happened to be passing by called the fire department ________the fire broke out.

The teacher demanded that he __________ hishomework at once.