Though having lived abroad for years, many Chinese still ______ the traditional customs.

155 In Beijing volunteers are making useof every minute to ______ their foreign languages because volunteers must passa written test and an interview

The roads are crowded __________ walking towork is even quicker than driving.

Can you think of some cases________drivers obviously knew the traffic rules but didn’t obey them

I would have come sooner but I ________ that they were waiting