she warns us to be careful when the traffic is heavy.同义句转换she warns us to be careful when ———— —————— —————— ——————traffic

she warns us to be careful when the traffic is heavy.同义句转换she warns us to be careful when ———— —————— —————— ——————traffic
she warns us to be careful when the traffic is heavy.同义句转换
she warns us to be careful when ———— —————— —————— ——————
traffic

she warns us to be careful when the traffic is heavy.同义句转换she warns us to be careful when ———— —————— —————— ——————traffic
正确答案应该是:
there is too much
她提醒我们当交通非常繁忙时要特别小心