问题详情：
用所给单词的适当形式填空。
shop，wonder，real，staff，seem
1. The bus is ________ crowded. There are too many people on it.
2. All the ________ in the company played a part in the meeting.
3. I ________ why you came here so late.
4. Ten kilometers ________ a long way for the old people to walk.
5. I happen to meet my old friend in the ________ center.
【回答】
1. really 7. staffs 8. wondered 9. seems 10. shopping
知识点：选词填空
题型：完成句子
