s warn that medical waste from hospitals, if properly, may contribute to spreading diseases.

Are you sure you can do well in tomorrow’s test, Lucy — . I’ve got everything ready.

The twins study very hard every day, so they take the cake in the exam.

I_______ while reading the English textbookLuckily , my roommate woke me up in time!

n he came back, he found the bag he had________over the seat wasgone.