问题

it is the first choice of many young travelers, Europe is also seen as a wonderful tourist attraction by many old people.

A:While
B:Unless
C:Once
D:Until;

正确答案是：

同类题型

The Chinese people _____hard-working and brave.

Don’t forget to take the message to myteacher.— ____.

It is the discovery of Cao Cao’s tomb, _____ was made in Anyang, Henan province, ____ has received widespread attention

The young man made a ______to his parents thathe would try to earn his own living after graduation.

Once a neighbour _______me _____ playing my radio too loudly.