The lack of health facilities and necessary protection for medical workers partly ______ the epidemic (蔓延) of Ebola.
The lady insisted that the young man ____her wallet and____to the police station at once.
Many students believe the choice of their courses and universities should ______ their own interests.
I’ve got to go now. Something has just _________ at school and I’m needed there.
The Australian boy has a good _____ of Chinese and can communicate with others freely.
Nowadays more and more people prefer ______ out to enjoy nature rather than stay indoors at the weekends.