We know that about seventy percent _____ the earth _____ covered by water.
| A．/; is | B．of; are |
| C．of; is | D．about; are |
—Mary was heard ________ just now. What happened?
—John was telling a joke.
| A．to cry | B．laugh | C．to laugh | D．cry |
Our school ________ in the last five years.
| A．changed | B．has changed | C．is changed | D．has been changed |
Only by studying hard ________ improve her English soon.
| A．she can | B．she did | C．can she | D．did she |
Many teenagers have hobbies. But sometimes they can get ________ of schoolwork.
| A．on the way | B．by the way | C．in the way | D．out of the way |
—When I was five, I drew very well.
—________.
| A．So did I | B．So was I | C．So I was | D．So I did |