—I can play_______piano.—Wow, you’re so great.A. a B. an C. the
Mary had_______much work to do that she stayed at her office all day long.
_______I felt very tired,I continued working.
Make sure you eat_________fresh fruit and vegetables every day.
The teacher speaks________loudly_________all the students can hear her.
You should work harder_______you can pass the exam.