题目内容

When______at the door, she was given a warm welcome.

A. appear
B. appeared
C. appearing
D. appears

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English and Chinese______quite different languages.

A. is
B. are
C. was
D. were

Write a letter to your friend Zhang Ailing to convey your congratulations on her admission

驾驶员对客舱广播应将音频选择板上的发射机选择开关置于：

A. PTT
B. VOX/IC
C. SERV
D. Pa

Politeness can also bring dangers to people if not properly conducted.

A. TRUE
B. FALSE