【推荐1】You can’t help ________ (wonder) how hard it was for the people then to put all those rocks into place. (所给词的适当形式填空)

【推荐2】The old man sat down and looked around at the restaurant, ________ (wonder) if his friend had arrived.

【推荐3】But for all its ancient buildings, Beijing is also a place that welcomes the fast-paced development of modern life, with 21st-century architectural ________ (wonder) standing side by side with historical buildings of the past. (所给词的适当形式填空)

【推荐1】The old man sat down and looked around at the restaurant, ________ (wonder) if his friend had arrived.

【推荐2】Distinguished guests and friends, welcome to our school, ________(attend) the ceremony of the 50^th Anniversary this morning are our alumni (校友) from home and abroad. （所给词的适当形式填空）

【推荐3】I know she’s here in spirit,________ (keep) an eye on us. （所给词的适当形式填空）