He became successful as a professional writer at the age of 20.

The volunteer team ______ students with various visual, hearing, physical and cognitive impairments every two months to give them both financial and spiritual support.

The chef tasted the meat cautious before carefully serving it to his special guest.

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

We shouldn't make an appointment with this doctor. You can see him whenever you want.

In this project, your responsibility is search for information about environmental pollution as much as possible.

Parents are always willing to lend a sympathetic _______ to their children when they have problems.

Our enterprise is seeking for candidates who are ______ and hard-working.