I have to see the doctor this afternoon because I ____ a lot lately.

The school is _____ a Chinese teacher for the new termwho masters the English language perfectly.

The government________air quality in urban areas from levels one to five: excellent, fairly good, slightly polluted, poor and dangerous.

now aims to boost domestic demand, and this______ would help the global economy

The work is not very profitable __________ cash, but I am getting valuable experience from it