What is the main idea of this passage
A. True friendship must help each other.
B. True friendship must be unconditional.
C. Friendship can be divided into two types.
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Hong Kong dollar can be exchanged (兑换) freely in the international (国际的) money market.
A. Right.
B. Wrong.
C. Doesn't say.
—Mary, John is going to Australia tomorrow. Are you going to ______at the airport tomorrow morning—Certainly.
A. see him away
B. see him off
C. see him out
How many chapters are there in this book
A. 15
B. 16
C. 17
The soldier______, but when he saw the captain he______.
A. sang... was stopped
B. sang... stopped
C. was singing... stopped