蚊子携带疟疾和其他传染性疾病。

Mosquitoes ___carry malaria and other infectious diseases.

有些人可能携带病毒却不表现出任何症状。

Some people can ___carry the virus without showing any symptoms.

众所周知，蜱虫会携带莱姆病和其他严重的细菌感染。

Ticks are known to ___carry Lyme disease and other serious bacterial infections.