It’s getting dark, but Mr. Johnson is still at his office. —No surprise. Who else can ______ he does?

Whether we’ll hold the sports meet depends on the weather, _____?

I like flowers. I hope to study at a school ____ many flowers and trees in it. [ ]

We have decided to try ________ best to raise more money for the local charity.

Each of the students, hoping to pass the exam, _____the book.