17. Be when you cross the road.

Excuse me, but I wonder if Joan is available at 3:30 this afternoon—–I’m afraid he ________ Harry Potter and the Philosopher’s Stone

The new survey shows that the number of students ______ computer games has been increasing in recent years.

What’s your plan for this winter vacation?—I’ll take an express train to Dalian for my holiday ______ school ends[ ]

The Hotel Al Arab ______ the first and only 7-star hotel in the world was designed in the shape of a sail of 321 meters [ ]