问题

Tourists should keep in mind that they are representing their motherland while abroad, so they need be _______ about their behaviour.

A:envious
B:cautious
C:previous
D:precious

正确答案是：

同类题型

Are you Kimi__ ，I am Jim.

There is still ________ water in the bottle．It’s enough for both of us．

Won’t Terry be upset—_______ He never thinks about anyone but himself.

Tom is not_______as his brother.

When shall we go to watch the basketball match in the sports centre—Not until the work _________ tomorrow.