The air in Beijing is getting much ______ now than a few years ago.
| A．clean | B．cleaner | C．cleanest | D．the cleanest |
— Could you tell me ______? I must find him.
— Sorry. I have no idea. But he was here just now.
| A．where Tom was | B．where Tom has gone |
| C．where can I find Tom | D．where Tom has been |
If you keep on working hard, I have no doubt ___ you’ll be successful in the future.
| A．whether | B．when | C．that | D．if |
She devoted as much time as she could _______ others.
| A．help | B．helped |
| C．to helping | D．helping |
Many butterflies are still ____ after the long winter days. Now the forest is ____.
| A．lively;lively | B．alive;alive |
| C．alive;lively | D．lively;alive |
Cheer up and keep on trying. Courage is doing ______.
| A．what are you afraid to do |
| B．what you are afraid to do |
| C．how are you afraid to do |
| D．how you are afraid to do |