Many doctors complain that they don’t have ______ working hours, for they have to wait for patients all day long in the hospital.

– The final exam is coming. I don’t think I can pass it though I work hard.  – Be confident! Even students with ___intelligence can be successful, let alone clever students like you!

I think whoever makes      contributions to the company than the others should get      income.

Glasses are       __and must be handled with great care.

While there are clear signs of a _______ recovery in the global economy, the country still faces a very difficult situation.