_____ the chapter four times, I finally understood the author's theory．
| A．Reading | B．Having read | C．To read | D．Read |
The airline stewardess (空姐) said to passengers on ______ with a beautiful smile, “welcome _________!”
| A．aboard; board | B．board; aboard | C．board; board | D．aboard; aboard |
He _______ foreigners in his cafe before, so he didn’t know how to serve the American family.
| A．had rarely had | B．had had rarely | C．rarely had | D．had rarely |
Rather than _____ at home I’d prefer ________out to get close to ________nature.
| A．stay; go; the | B．to stay; go; / | C．stay; to go; / | D．to stay; to go; the |
Qingdao lies______ the south of Shandong Province, ________ the north of Shanghai, and___________ the eastern coast of China.
| A．on; in; off | B．in; to; on | C．in; on; off | D．to; off; on |
Her new album ______last month and became a hit in no time.
| A．came out | B．came about | C．came up | D．came across |