We can’t take part in the competition ________ we get our student card.

litter in the street in Singapore, youcould be arrested

Shall we go to that restaurant for dinner，Mr Smith—We’d better not.The dishes there are ________．

Whendifferent cultures, we often pay attention only to the differences without noticing the similarities.[ ]

In recent years travel companies have succeeded in selling us the idea that the further we go, ______.